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1,187 results on '"CHEN, J. F."'

1. Light-induced fictitious magnetic fields for quantum storage in cold atomic ensembles

Author

Wang, Jianmin, Dong, Liang, Wang, Xingchang, Zhou, Zihan, Zuo, Ying, Siviloglou, Georgios A., and Chen, J. F.

Subjects
Quantum Physics, Physics - Atomic Physics, Physics - Optics
Abstract

In this work, we have demonstrated that optically generated fictitious magnetic fields can be utilized to extend the lifetime of quantum memories in cold atomic ensembles. All the degrees of freedom of an AC Stark shift such as polarization, spatial profile, and temporal waveform can be readily controlled in a precise manner. Temporal fluctuations over several experimental cycles, and spatial inhomogeneities along a cold atomic gas have been compensated by an optical beam. The advantage of the use of fictitious magnetic fields for quantum storage stems from the speed and spatial precision that these fields can be synthesized. Our simple and versatile technique can find widespread application in coherent pulse and single-photon storage in any atomic species., Comment: 14pages,8 figures

Published
2024

2. STCF Conceptual Design Report: Volume 1 -- Physics & Detector

Author

Achasov, M., Ai, X. C., Aliberti, R., An, L. P., An, Q., Bai, X. Z., Bai, Y., Bakina, O., Barnyakov, A., Blinov, V., Bobrovnikov, V., Bodrov, D., Bogomyagkov, A., Bondar, A., Boyko, I., Bu, Z. H., Cai, F. M., Cai, H., Cao, J. J., Cao, Q. H., Cao, Z., Chang, Q., Chao, K. T., Chen, D. Y., Chen, H., Chen, H. X., Chen, J. F., Chen, K., Chen, L. L., Chen, P., Chen, S. L., Chen, S. M., Chen, S., Chen, S. P., Chen, W., Chen, X. F., Chen, X., Chen, Y., Chen, Y. Q., Cheng, H. Y., Cheng, J., Cheng, S., Dai, J. P., Dai, L. Y., Dai, X. C., Dedovich, D., Denig, A., Denisenko, I., Ding, D. Z., Dong, L. Y., Dong, W. H., Druzhinin, V., Du, D. S., Du, Y. J., Du, Z. G., Duan, L. M., Epifanov, D., Fan, Y. L., Fang, S. S., Fang, Z. J., Fedotovich, G., Feng, C. Q., Feng, X., Feng, Y. T., Fu, J. L., Gao, J., Ge, P. S., Geng, C. Q., Geng, L. S., Gilman, A., Gong, L., Gong, T., Gradl, W., Gu, J. L., Escalante, A. G., Gui, L. C., Guo, F. K., Guo, J. C., Guo, J., Guo, Y. P., Guo, Z. H., Guskov, A., Han, K. L., Han, L., Han, M., Hao, X. Q., He, J. B., He, S. Q., He, X. G., He, Y. L., He, Z. B., Heng, Z. X., Hou, B. L., Hou, T. J., Hou, Y. R., Hu, C. Y., Hu, H. M., Hu, K., Hu, R. J., Hu, X. H., Hu, Y. C., Hua, J., Huang, G. S., Huang, J. S., Huang, M., Huang, Q. Y., Huang, W. Q., Huang, X. T., Huang, X. J., Huang, Y. B., Huang, Y. S., Hüsken, N., Ivanov, V., Ji, Q. P., Jia, J. J., Jia, S., Jia, Z. K., Jiang, H. B., Jiang, J., Jiang, S. Z., Jiao, J. B., Jiao, Z., Jing, H. J., Kang, X. L., Kang, X. S., Ke, B. C., Kenzie, M., Khoukaz, A., Koop, I., Kravchenko, E., Kuzmin, A., Lei, Y., Levichev, E., Li, C. H., Li, C., Li, D. Y., Li, F., Li, G., Li, H. B., Li, H., Li, H. N., Li, H. J., Li, H. L., Li, J. M., Li, J., Li, L., Li, L. Y., Li, N., Li, P. R., Li, R. H., Li, S., Li, T., Li, W. J., Li, X. H., Li, X. Q., Li, Y., Li, Y. Y., Li, Z. J., Liang, H., Liang, J. H., Liao, G. R., Liao, L. Z., Liao, Y., Lin, C. X., Lin, X. S., Liu, B. J., Liu, C. W., Liu, D., Liu, F., Liu, G. M., Liu, H. B., Liu, J., Liu, J. J., Liu, J. B., Liu, K., Liu, K. Y., Liu, L., Liu, Q., Liu, S. B., Liu, T., Liu, X., Liu, Y. W., Liu, Y., Liu, Y. L., Liu, Z. Q., Liu, Z. Y., Liu, Z. W., Logashenko, I., Long, Y., Lu, C. G., Lu, N., Lü, Q. F., Lu, Y., Lv, Z., Lukin, P., Luo, F. J., Luo, T., Luo, X. F., Lyu, H. J., Lyu, X. R., Ma, J. P., Ma, P., Ma, Y., Maas, F., Malde, S., Matvienko, D., Meng, Z. X., Mitchell, R., Dias, J. M., Nefediev, A., Nefedov, Y., Olsen, S. L., Ouyang, Q., Pakhlov, P., Pakhlova, G., Pan, X., Pan, Y., Passemar, E., Pei, Y. P., Peng, H. P., Peng, L., Peng, X. Y., Peng, X. J., Peters, K., Pivovarov, S., Pyata, E., Qi, B. B., Qi, Y. Q., Qian, W. B., Qian, Y., Qiao, C. F., Qin, J. J., Qin, L. Q., Qin, X. S., Qiu, T. L., Rademacker, J., Redmer, C. F., Sang, H. Y., Saur, M., Shan, W., Shan, X. Y., Shang, L. L., Shao, M., Shekhtman, L., Shen, C. P., Shen, J. M., Shen, Z. T., Shi, H. C., Shi, X. D., Shwartz, B., Sokolov, A., Song, J. J., Song, W. M., Song, Y., Song, Y. X., Sukharev, A., Sun, J. F., Sun, L., Sun, X. M., Sun, Y. J., Sun, Z. P., Tang, J., Tang, S. S., Tang, Z. B., Tian, C. H., Tian, J. S., Tikhonov, Y., Todyshev, K., Uglov, T., Vorobyev, V., Wan, B. D., Wang, B. L., Wang, B., Wang, D. Y., Wang, G. Y., Wang, G. L., Wang, H. L., Wang, J., Wang, J. H., Wang, J. C., Wang, M. L., Wang, R., Wang, S. B., Wang, W., Wang, W. P., Wang, X. C., Wang, X. D., Wang, X. L., Wang, X. P., Wang, X. F., Wang, Y. D., Wang, Y. P., Wang, Y. Q., Wang, Y. L., Wang, Y. G., Wang, Z. Y., Wang, Z. L., Wang, Z. G., Wei, D. H., Wei, X. L., Wei, X. M., Wen, Q. G., Wen, X. J., Wilkinson, G., Wu, B., Wu, J. J., Wu, L., Wu, P. W., Wu, T. W., Wu, Y. S., Xia, L., Xiang, T., Xiao, C. W., Xiao, D., Xiao, M., Xie, Y. H., Xing, Y., Xing, Z. Z., Xiong, X. N., Xu, F. R., Xu, J., Xu, L. L., Xu, Q. N., Xu, X. C., Xu, X. P., Xu, Y. C., Xu, Y. P., Xu, Y., Xu, Z. Z., Xuan, D. W., Xue, F. F., Yan, L., Yan, M. J., Yan, W. B., Yan, W. C., Yan, X. S., Yang, B. F., Yang, C., Yang, H. J., Yang, H. R., Yang, H. T., Yang, J. F., Yang, S. L., Yang, Y. D., Yang, Y. H., Yang, Y. S., Yang, Y. L., Yang, Z. Y., Yao, D. L., Yin, H., Yin, X. H., Yokozaki, N., You, S. Y., You, Z. Y., Yu, C. X., Yu, F. S., Yu, G. L., Yu, H. L., Yu, J. S., Yu, J. Q., Yuan, L., Yuan, X. B., Yue, Y. F., Zeng, M., Zeng, S., Zhang, A. L., Zhang, B. W., Zhang, G. Y., Zhang, G. Q., Zhang, H. J., Zhang, H. B., Zhang, J. Y., Zhang, J. L., Zhang, J., Zhang, L., Zhang, L. M., Zhang, R., Zhang, S. L., Zhang, T., Zhang, X., Zhang, Y., Zhang, Y. X., Zhang, Y. T., Zhang, Y. F., Zhang, Y. C., Zhang, Y. M., Zhang, Y. L., Zhang, Z. H., Zhang, Z. Y., Zhao, H. Y., Zhao, J., Zhao, L., Zhao, M. G., Zhao, Q., Zhao, R. G., Zhao, R. P., Zhao, Z. G., Zhao, Z. X., Zhemchugov, A., Zheng, B., Zheng, L., Zheng, Q. B., Zheng, R., Zheng, Y. H., Zhong, X. H., Zhou, H. J., Zhou, H. Q., Zhou, H., Zhou, S. H., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, Y. L., Zhou, Y., Zhou, Y. X., Zhou, Z. Y., Zhu, J. Y., Zhu, K., Zhu, R. D., Zhu, R. L., Zhu, S. H., Zhu, Y. C., Zhu, Z. A., Zhukova, V., Zhulanov, V., Zou, B. S., and Zuo, Y. B.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology, Physics - Instrumentation and Detectors
Abstract

The Super $\tau$-Charm facility (STCF) is an electron-positron collider proposed by the Chinese particle physics community. It is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of $0.5\times 10^{35}{\rm cm}^{-2}{\rm s}^{-1}$ or higher. The STCF will produce a data sample about a factor of 100 larger than that by the present $\tau$-Charm factory -- the BEPCII, providing a unique platform for exploring the asymmetry of matter-antimatter (charge-parity violation), in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions, as well as searching for exotic hadrons and physics beyond the Standard Model. The STCF project in China is under development with an extensive R\&D program. This document presents the physics opportunities at the STCF, describes conceptual designs of the STCF detector system, and discusses future plans for detector R\&D and physics case studies.

Published
2023
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3. Spatiotemporal single-photon Airy bullets

Author

Wang, Jianmin, Zuo, Ying, Wang, Xingchang, Christodoulides, Demetrios N., Siviloglou, Georgios A., and Chen, J. F.

Subjects
Physics - Optics, Physics - Atomic Physics, Quantum Physics
Abstract

Uninhibited control of the complex spatiotemporal quantum wavefunction of a single photon has so far remained elusive even though it can dramatically increase the encoding flexibility and thus the information capacity of a photonic quantum link. By fusing temporal waveform generation in a cold atomic ensemble and spatial single-photon shaping, we hereby demonstrate for the first time complete spatiotemporal control of a propagation invariant (2+1)D Airy single-photon optical bullet. These correlated photons are not only self-accelerating and impervious to spreading as their classical counterparts, but can be concealed and revealed in the presence of strong classical light noise. Our methodology allows one to synthesize in a robust and versatile manner arbitrary quantum nonspreading spatiotemporal light bullets and in this respect could have ramifications in a broad range of applications such as quantum imaging, long-distance quantum communications, and multidimensional information encoding., Comment: 28 pages, 17 figures

Published
2022
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5. STCF conceptual design report (Volume 1): Physics & detector

Author

Achasov, M., Ai, X. C., An, L. P., Aliberti, R., An, Q., Bai, X. Z., Bai, Y., Bakina, O., Barnyakov, A., Blinov, V., Bobrovnikov, V., Bodrov, D., Bogomyagkov, A., Bondar, A., Boyko, I., Bu, Z. H., Cai, F. M., Cai, H., Cao, J. J., Cao, Q. H., Cao, X., Cao, Z., Chang, Q., Chao, K. T., Chen, D. Y., Chen, H., Chen, H. X., Chen, J. F., Chen, K., Chen, L. L., Chen, P., Chen, S. L., Chen, S. M., Chen, S., Chen, S. P., Chen, W., Chen, X., Chen, X. F., Chen, X. R., Chen, Y., Chen, Y. Q., Cheng, H. Y., Cheng, J., Cheng, S., Cheng, T. G., Dai, J. P., Dai, L. Y., Dai, X. C., Dedovich, D., Denig, A., Denisenko, I., Dias, J. M., Ding, D. Z., Dong, L. Y., Dong, W. H., Druzhinin, V., Du, D. S., Du, Y. J., Du, Z. G., Duan, L. M., Epifanov, D., Fan, Y. L., Fang, S. S., Fang, Z. J., Fedotovich, G., Feng, C. Q., Feng, X., Feng, Y. T., Fu, J. L., Gao, J., Gao, Y. N., Ge, P. S., Geng, C. Q., Geng, L. S., Gilman, A., Gong, L., Gong, T., Gou, B., Gradl, W., Gu, J. L., Guevara, A., Gui, L. C., Guo, A. Q., Guo, F. K., Guo, J. C., Guo, J., Guo, Y. P., Guo, Z. H., Guskov, A., Han, K. L., Han, L., Han, M., Hao, X. Q., He, J. B., He, S. Q., He, X. G., He, Y. L., He, Z. B., Heng, Z. X., Hou, B. L., Hou, T. J., Hou, Y. R., Hu, C. Y., Hu, H. M., Hu, K., Hu, R. J., Hu, W. H., Hu, X. H., Hu, Y. C., Hua, J., Huang, G. S., Huang, J. S., Huang, M., Huang, Q. Y., Huang, W. Q., Huang, X. T., Huang, X. J., Huang, Y. B., Huang, Y. S., Hüsken, N., Ivanov, V., Ji, Q. P., Jia, J. J., Jia, S., Jia, Z. K., Jiang, H. B., Jiang, J., Jiang, S. Z., Jiao, J. B., Jiao, Z., Jing, H. J., Kang, X. L., Kang, X. S., Ke, B. C., Kenzie, M., Khoukaz, A., Koop, I., Kravchenko, E., Kuzmin, A., Lei, Y., Levichev, E., Li, C. H., Li, C., Li, D. Y., Li, F., Li, G., Li, G., Li, H. B., Li, H., Li, H. N., Li, H. J., Li, H. L., Li, J. M., Li, J., Li, L., Li, L., Li, L. Y., Li, N., Li, P. R., Li, R. H., Li, S., Li, T., Li, W. J., Li, X., Li, X. H., Li, X. Q., Li, X. H., Li, Y., Li, Y. Y., Li, Z. J., Liang, H., Liang, J. H., Liang, Y. T., Liao, G. R., Liao, L. Z., Liao, Y., Lin, C. X., Lin, D. X., Lin, X. S., Liu, B. J., Liu, C. W., Liu, D., Liu, F., Liu, G. M., Liu, H. B., Liu, J., Liu, J. J., Liu, J. B., Liu, K., Liu, K. Y., Liu, K., Liu, L., Liu, Q., Liu, S. B., Liu, T., Liu, X., Liu, Y. W., Liu, Y., Liu, Y. L., Liu, Z. Q., Liu, Z. Y., Liu, Z. W., Logashenko, I., Long, Y., Lu, C. G., Lu, J. X., Lu, N., Lü, Q. F., Lu, Y., Lu, Y., Lu, Z., Lukin, P., Luo, F. J., Luo, T., Luo, X. F., Lyu, H. J., Lyu, X. R., Ma, J. P., Ma, P., Ma, Y., Ma, Y. M., Maas, F., Malde, S., Matvienko, D., Meng, Z. X., Mitchell, R., Nefediev, A., Nefedov, Y., Olsen, S. L., Ouyang, Q., Pakhlov, P., Pakhlova, G., Pan, X., Pan, Y., Passemar, E., Pei, Y. P., Peng, H. P., Peng, L., Peng, X. Y., Peng, X. J., Peters, K., Pivovarov, S., Pyata, E., Qi, B. B., Qi, Y. Q., Qian, W. B., Qian, Y., Qiao, C. F., Qin, J. J., Qin, J. J., Qin, L. Q., Qin, X. S., Qiu, T. L., Rademacker, J., Redmer, C. F., Sang, H. Y., Saur, M., Shan, W., Shan, X. Y., Shang, L. L., Shao, M., Shekhtman, L., Shen, C. P., Shen, J. M., Shen, Z. T., Shi, H. C., Shi, X. D., Shwartz, B., Sokolov, A., Song, J. J., Song, W. M., Song, Y., Song, Y. X., Sukharev, A., Sun, J. F., Sun, L., Sun, X. M., Sun, Y. J., Sun, Z. P., Tang, J., Tang, S. S., Tang, Z. B., Tian, C. H., Tian, J. S., Tian, Y., Tikhonov, Y., Todyshev, K., Uglov, T., Vorobyev, V., Wan, B. D., Wang, B. L., Wang, B., Wang, D. Y., Wang, G. Y., Wang, G. L., Wang, H. L., Wang, J., Wang, J. H., Wang, J. C., Wang, M. L., Wang, R., Wang, R., Wang, S. B., Wang, W., Wang, W. P., Wang, X. C., Wang, X. D., Wang, X. L., Wang, X. L., Wang, X. P., Wang, X. F., Wang, Y. D., Wang, Y. P., Wang, Y. Q., Wang, Y. L., Wang, Y. G., Wang, Z. Y., Wang, Z. Y., Wang, Z. L., Wang, Z. G., Wei, D. H., Wei, X. L., Wei, X. M., Wen, Q. G., Wen, X. J., Wilkinson, G., Wu, B., Wu, J. J., Wu, L., Wu, P., Wu, T. W., Wu, Y. S., Xia, L., Xiang, T., Xiao, C. W., Xiao, D., Xiao, M., Xie, K. P., Xie, Y. H., Xing, Y., Xing, Z. Z., Xiong, X. N., Xu, F. R., Xu, J., Xu, L. L., Xu, Q. N., Xu, X. C., Xu, X. P., Xu, Y. C., Xu, Y. P., Xu, Y., Xu, Z. Z., Xuan, D. W., Xue, F. F., Yan, L., Yan, M. J., Yan, W. B., Yan, W. C., Yan, X. S., Yang, B. F., Yang, C., Yang, H. J., Yang, H. R., Yang, H. T., Yang, J. F., Yang, S. L., Yang, Y. D., Yang, Y. H., Yang, Y. S., Yang, Y. L., Yang, Z. W., Yang, Z. Y., Yao, D. L., Yin, H., Yin, X. H., Yokozaki, N., You, S. Y., You, Z. Y., Yu, C. X., Yu, F. S., Yu, G. L., Yu, H. L., Yu, J. S., Yu, J. Q., Yuan, L., Yuan, X. B., Yuan, Z. Y., Yue, Y. F., Zeng, M., Zeng, S., Zhang, A. L., Zhang, B. W., Zhang, G. Y., Zhang, G. Q., Zhang, H. J., Zhang, H. B., Zhang, J. Y., Zhang, J. L., Zhang, J., Zhang, L., Zhang, L. M., Zhang, Q. A., Zhang, R., Zhang, S. L., Zhang, T., Zhang, X., Zhang, Y., Zhang, Y. J., Zhang, Y. X., Zhang, Y. T., Zhang, Y. F., Zhang, Y. C., Zhang, Y., Zhang, Y., Zhang, Y. M., Zhang, Y. L., Zhang, Z. H., Zhang, Z. Y., Zhang, Z. Y., Zhao, H. Y., Zhao, J., Zhao, L., Zhao, M. G., Zhao, Q., Zhao, R. G., Zhao, R. P., Zhao, Y. X., Zhao, Z. G., Zhao, Z. X., Zhemchugov, A., Zheng, B., Zheng, L., Zheng, Q. B., Zheng, R., Zheng, Y. H., Zhong, X. H., Zhou, H. J., Zhou, H. Q., Zhou, H., Zhou, S. H., Zhou, X., Zhou, X. K., Zhou, X. P., Zhou, X. R., Zhou, Y. L., Zhou, Y., Zhou, Y. X., Zhou, Z. Y., Zhu, J. Y., Zhu, K., Zhu, R. D., Zhu, R. L., Zhu, S. H., Zhu, Y. C., Zhu, Z. A., Zhukova, V., Zhulanov, V., Zou, B. S., and Zuo, Y. B.

Published
2024
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7. Quantum Interference between Photons and Single Quanta of Stored Atomic Coherence

Author

Wang, Xingchang, Wang, Jianmin, Ren, Zhiqiang, Wen, Rong, Zou, Chang-Ling, Siviloglou, Georgios A., and Chen, J. F.

Subjects
Quantum Physics, Physics - Atomic Physics
Abstract

Essential for building quantum networks over remote independent nodes, the indistinguishability of photons has been extensively studied by observing the coincidence dip in the Hong-Ou-Mandel interferometer. However, indistinguishability is not limited to the same type of bosons. For the first time, we hereby observe quantum interference between flying photons and a single quantum of stored atomic coherence (magnon) in an atom-light beam splitter interface. We demonstrate that the Hermiticity of this interface determines the type of quantum interference between photons and magnons. Consequently, not only the bunching behavior that characterizes bosons is observed, but counterintuitively, fermionlike antibunching as well. The hybrid nature of the demonstrated magnon-photon quantum interface can be applied to versatile quantum memory platforms, and can lead to fundamentally different photon distributions from those occurring in boson sampling., Comment: 15 pages (6 pages for main text, 9 pages for supplemental material), 9 figures (4 figures for main text, 5 figures for supplemental material), 1 table (1 table for supplemental material)

Published
2021
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8. Local shape of the vapor-liquid critical point on the thermodynamic surface and the van der Waals equation of state

Author

Yu, J. S., Zhou, X., Chen, J. F., Du, W. K., Wang, X., and Liu, Q. H.

Subjects
Condensed Matter - Statistical Mechanics, Condensed Matter - Other Condensed Matter, Mathematical Physics
Abstract

Differential geometry is powerful tool to analyze the vapor-liquid critical point on the surface of the thermodynamic equation of state. The existence of usual condition of the critical point $\left( \partial p/\partial V\right) _{T}=0$ requires the isothermal process, but the universality of the critical point is its independence of whatever process is taken, and so we can assume $\left( \partial p/\partial T\right) _{V}=0$. The distinction between the critical point and other points on the surface leads us to further assume that the critical point is geometrically represented by zero Gaussian curvature. A slight extension of the van der Waals equation of state is to letting two parameters $a$ and $b$ in it vary with temperature, which then satisfies both assumptions and reproduces its usual form when the temperature is approximately the critical one., Comment: 6 pages. substantially revised

Published
2021
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9. Interaction-enhanced transmission imaging with Rydberg atoms

Author

Huo, Xiaoguang, Chen, J. F., Qian, Jing, and Zhang, Weiping

Subjects
Physics - Atomic Physics, Physics - Optics, Quantum Physics
Abstract

Atomic-scale imaging offers a reliable tool to directly measure the movement of microscopic particles. We present a scheme for achieving a nondestructive and ultrasensitive imaging of Rydberg atoms within an ensemble of cold probe atoms. This is made possible by the interaction-enhanced electromagnetically induced transparency at off-resonance which enables an extremely narrow absorption dip for an enhanced transmission. Through the transmission of a probe beam, we obtain the distribution of Rydberg atoms with both high spatial resolution and fast response, which ensures a more precise real-time imaging. Increased resolution compared to the prior interaction-enhanced imaging technique allows us to accurately locate the atoms by adjusting the probe detuning only. This new type of interaction-enhanced transmission imaging can be utilized to other impure systems containing strong many-body interactions, and is promising to develop super-resolution microscopy of cold atoms., Comment: 13 pages, 8 figures

Published
2020
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10. SU(2)-in-SU(1,1) Nested Interferometer for Highly Sensitive, Loss-Tolerant Quantum Metrology

Author

Du, Wei, Kong, Jia, Jia, Jun, Ming, Sheng, Yuan, Chun-Hua, Chen, J. F., Ou, Z. Y., Mitchell, Morgan W., and Zhang, Weiping

Subjects
Quantum Physics
Abstract

We present experimental and theoretical results on a new interferometer topology that nests a SU(2) interferometer, e.g., a Mach-Zehnder or Michelson interferometer, inside a SU(1,1) interferometer, i.e., a Mach-Zehnder interferometer with parametric amplifiers in place of beam splitters. This SU(2)-in-SU(1,1) nested interferometer (SISNI) simultaneously achieves high signal-to-noise ratio (SNR), sensitivity beyond the standard quantum limit (SQL) and tolerance to photon losses external to the interferometer, e.g., in detectors. We implement a SISNI using parametric amplification by four-wave mixing (FWM) in Rb vapor and a laser-fed Mach-Zehnder SU(2) interferometer. We observe path-length sensitivity with SNR 2.2 dB beyond the SQL at power levels (and thus SNR) 2 orders of magnitude beyond those of previous loss-tolerant interferometers. We find experimentally the optimal FWM gains and find agreement with a minimal quantum noise model for the FWM process. The results suggest ways to boost the in-practice sensitivity of high-power interferometers, e.g., gravitational wave interferometers, and may enable high-sensitivity, quantum-enhanced interferometry at wavelengths for which efficient detectors are not available., Comment: 6 pages + 4 of supplemental material, 5 figures

Published
2020
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11. Quantum dense metrology by an SU(2)-in-SU(1,1) nested interferometer

Author

Du, Wei, Chen, J. F., Ou, Z. Y., and Zhang, Weiping

Subjects
Quantum Physics
Abstract

With the help of quantum entanglement, quantum dense metrology (QDM) is a technique that can perform the joint estimates of two conjugate quantities such as phase and amplitude modulations of an optical field with an accuracy beating the standard quantum limit simultaneously. SU(1,1) interferometers (SUI) can realize QDM with detection loss tolerance but is limited in absolute sensitivity. Here we present a QDM scheme with a linear interferometer (SU(2)) nested inside an SU(1,1) interferometer. By using a degenerate SUI and controlling the phase angle of the phase-sensitive amplifers in SUI, we can achieve the optimum quantum enhancement in the measurement precision of arbitrary mixture of phase and amplitude modulation.

Published
2020
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13. Non-Hermitian magnon-photon interference in an atomic ensemble

Author

Wen, Rong, Zou, Chang-Ling, Zhu, Xinyu, Chen, Peng, Ou, Z. Y., Chen, J. F., and Zhang, Weiping

Subjects
Quantum Physics
Abstract

The beam-splitter (BS) is one of the most common and important components in modern optics, and lossless BS which features unitary transformation induces Hermitian evolution of light. However, the practical BS based on the conversion between different degree of freedoms are naturally non-Hermitian, as a result of essentially open quantum dynamics. In this work, we experimentally demonstrate a non-Hermitian BS for the interference between traveling photonic and localized magnonic modes. The non-Hermitian magnon-photon BS is achieved by the coherent and incoherent interaction mediated by the excited levels of atoms, which is reconfigurable by adjusting the detuning of excitation. Unconventional correlated interference pattern is observed at the photon and magnon output ports. Our work is potential for extending to single-quantum level to realize interference between a single photon and magnon, which provides an efficient and simple platform for future tests of non-Hermitian quantum physics.

Published
2018
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15. Tomography of the temporal-spectral state of subnatural-linewidth single photons from atomic ensembles

Author

Yang, Ce, Gu, Zhenjie, Chen, Peng, Qin, Zhongzhong, Chen, J. F., and Zhang, Weiping

Subjects
Quantum Physics
Abstract

Subnatural-linewidth single-photon source is a potential candidate for exploring the time degree of freedom in photonic quantum information science. This type of single-photon source has been demonstrated to be generated and reshaped in atomic ensembles without any external cavity or filter, and is typically characterized through photon-counting technology. However, the full complex temporal mode function(TMF) of the photon source is not able to be revealed from direct photon counting measurement. Here, for the first time, we demonstrate the complete temporal mode of the subnatural-linewidth single photons generated from a cold atomic cloud. Through heterodyne detection between the single photon and a local oscillator with various central frequencies, we recover the temporal density matrix of the single photons at resolvable time bins. Further we demonstrate that the reduced autocorrelation function measured through homodyne detection perfectly reveals the pure temporal-spectral state of the subnatural-linewidth single photons., Comment: 6 pages, 3 figures

Published
2018
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16. Decoherence of Macroscopic Objects from Relativistic Effect

Author

Dong, G. H., Ma, Y. H., Chen, J. F., Wang, Xin, and Sun, C. P.

Subjects
Quantum Physics
Abstract

We study how the decoherence of macroscopic objects is induced intrisinically by relativistic effect. With the degree of freedom of center of mass (CM) characterizing the collective quantum state of a macroscopic object (MO), it is found that a MO consisting of N particles can decohere with time scale no more than sqrt(N). Here, the special relativity can induce the coupling of the collective motion mode and the relative motion modes in an order of 1/c2, which intrinsically results in the above minimum decoherence., Comment: 10 pages, 3 figures

Published
2017
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17. Absolute sensitivity of phase measurement in an SU(1,1) type interferometer

Author

Du, Wei, Jia, Jun, Chen, J. F., Ou, Z. Y., and Zhang, Weiping

Subjects
Quantum Physics
Abstract

Absolute sensitivity is measured for the phase measurement in an SU(1,1) type interferometer and the results are compared to that of a Mach-Zehnder interferometer operated under the condition of the same intra-interferometer intensity. The interferometer is phase locked to a point with the largest quantum noise cancellation, and a simulated phase modulation is added in one arm of SU(1,1) interferometer. Both the signal and noise level are estimated at the same frequency range, and we obtain 3dB improvement in sensitivity for the SU(1,1) interferometer over the Mach-Zehnder interferometer. Our results demonstrate a direct phase estimation, and may pave the way for practical applications of nonlinear interferometer., Comment: 4 pages, 4 figures

Published
2017
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18. High temperature deformation constitutive model of GGG70L duction iron

Author

Huo, P., He, Y. J., Chen, J. F., Huo, P., He, Y. J., and Chen, J. F.

Abstract

In order to accurately describe the high temperature deformation behavior of GGG70L ductile iron, the thermal simulation experiments with deformation rate of 0,01~10 s-1 were carried out at 800~1 100 °C by Gleeble-1500D thermal simulation machine. The deformation behavior of GGG70L ductile iron was studied. The temperature compensated strain rate Zener-Hollomon parameter was introduced, and the constitutive model of GGG70L ductile iron was established based on the strain compensated Arrhenius model. The results show that the theoretical value of peak stress calculated by the constitutive model is in good agreement with the experimental results, and the correlation is 97,8 %, which can accurately describe the high temperature deformation behavior of GGG70L ductile iron

Published
2024

19. 2209 duplex stainless steel high temperature plastic deformation intrinsic modeling

Author

Huo, P., Chen, J. F., Li, X., Huo, P., Chen, J. F., and Li, X.

Abstract

The high temperature compression experiments of 2209 duplex stainless steel were carried out by using Gleeble3800 thermal simulator, the rate was 0,01~10 s–1, and the deformation temperature was 950~1 100°C. The strain rate and deformation temperature were analyzed and the effect of strain rate and deformation temperature were analyzed. The high-temperature rheological behavior of 2209 duplex stainless steel was investigated, and the effects of strain rate and deformation temperature on the two-phase relationship of 2209 duplex stainless steel were analyzed, the strain rate compensation factor Z was introduced, and the Arrhenius eigenmodel equation was established. The results show that the theoretical value of peak stress calculated numerically by this constitutive model fits well with the experimental results, and the correlation is 97,3 %, which verifies the feasibility of the model.

Published
2024

20. Effect of tempering temperature on microstructure and properties of 65Mn steel for metallurgical saw blade

Author

Sui, S. Y., Wang, Y., Chen, J. F., Sui, S. Y., Wang, Y., and Chen, J. F.

Abstract

The continuous tempering treatment of 65 Mn steel for metallurgical saw blade was carried out in the temperature range of 200-620 °C by means of metallographic observation and mechanical property test. The results show that with the increase of tempering temperature, the strength and hardness of the pattern decrease continuously, and the impact value, section shrinkage and elongation change significantly. The experimental results provide a technical reference for preventing the failure of the saw blade during operation.

Published
2024

21. Efficacy of probiotics on the cognitive function, sleep efficiency, and antioxidative biomarkers in patients with Alzheimer’s disease dementia: a 12-week randomized, double-blind, parallel-group clinical trial

Author

Sun, Y., primary, Kuo, Y.-W., additional, Tsai, S.-Y., additional, Lin, J.-H., additional, Hsu, Y.-C., additional, Chen, J.-F., additional, Hsia, K.-C., additional, Ho, H.-H., additional, Liu, H.-H., additional, and Kua, H.-C., additional

Published
2024
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23. STCF conceptual design report (Volume 1): Physics & detector

Author

Achasov, M., primary, Ai, X. C., additional, An, L. P., additional, Aliberti, R., additional, An, Q., additional, Bai, X. Z., additional, Bai, Y., additional, Bakina, O., additional, Barnyakov, A., additional, Blinov, V., additional, Bobrovnikov, V., additional, Bodrov, D., additional, Bogomyagkov, A., additional, Bondar, A., additional, Boyko, I., additional, Bu, Z. H., additional, Cai, F. M., additional, Cai, H., additional, Cao, J. J., additional, Cao, Q. H., additional, Cao, X., additional, Cao, Z., additional, Chang, Q., additional, Chao, K. T., additional, Chen, D. Y., additional, Chen, H., additional, Chen, H. X., additional, Chen, J. F., additional, Chen, K., additional, Chen, L. L., additional, Chen, P., additional, Chen, S. L., additional, Chen, S. M., additional, Chen, S., additional, Chen, S. P., additional, Chen, W., additional, Chen, X., additional, Chen, X. F., additional, Chen, X. R., additional, Chen, Y., additional, Chen, Y. Q., additional, Cheng, H. Y., additional, Cheng, J., additional, Cheng, S., additional, Cheng, T. G., additional, Dai, J. P., additional, Dai, L. Y., additional, Dai, X. C., additional, Dedovich, D., additional, Denig, A., additional, Denisenko, I., additional, Dias, J. M., additional, Ding, D. Z., additional, Dong, L. Y., additional, Dong, W. H., additional, Druzhinin, V., additional, Du, D. S., additional, Du, Y. J., additional, Du, Z. G., additional, Duan, L. M., additional, Epifanov, D., additional, Fan, Y. L., additional, Fang, S. S., additional, Fang, Z. J., additional, Fedotovich, G., additional, Feng, C. Q., additional, Feng, X., additional, Feng, Y. T., additional, Fu, J. L., additional, Gao, J., additional, Gao, Y. N., additional, Ge, P. S., additional, Geng, C. Q., additional, Geng, L. S., additional, Gilman, A., additional, Gong, L., additional, Gong, T., additional, Gou, B., additional, Gradl, W., additional, Gu, J. L., additional, Guevara, A., additional, Gui, L. C., additional, Guo, A. Q., additional, Guo, F. K., additional, Guo, J. C., additional, Guo, J., additional, Guo, Y. P., additional, Guo, Z. H., additional, Guskov, A., additional, Han, K. L., additional, Han, L., additional, Han, M., additional, Hao, X. Q., additional, He, J. B., additional, He, S. Q., additional, He, X. G., additional, He, Y. L., additional, He, Z. B., additional, Heng, Z. X., additional, Hou, B. L., additional, Hou, T. J., additional, Hou, Y. R., additional, Hu, C. Y., additional, Hu, H. M., additional, Hu, K., additional, Hu, R. J., additional, Hu, W. H., additional, Hu, X. H., additional, Hu, Y. C., additional, Hua, J., additional, Huang, G. S., additional, Huang, J. S., additional, Huang, M., additional, Huang, Q. Y., additional, Huang, W. Q., additional, Huang, X. T., additional, Huang, X. J., additional, Huang, Y. B., additional, Huang, Y. S., additional, Hüsken, N., additional, Ivanov, V., additional, Ji, Q. P., additional, Jia, J. J., additional, Jia, S., additional, Jia, Z. K., additional, Jiang, H. B., additional, Jiang, J., additional, Jiang, S. Z., additional, Jiao, J. B., additional, Jiao, Z., additional, Jing, H. J., additional, Kang, X. L., additional, Kang, X. S., additional, Ke, B. C., additional, Kenzie, M., additional, Khoukaz, A., additional, Koop, I., additional, Kravchenko, E., additional, Kuzmin, A., additional, Lei, Y., additional, Levichev, E., additional, Li, C. H., additional, Li, C., additional, Li, D. Y., additional, Li, F., additional, Li, G., additional, Li, H. B., additional, Li, H., additional, Li, H. N., additional, Li, H. J., additional, Li, H. L., additional, Li, J. M., additional, Li, J., additional, Li, L., additional, Li, L. Y., additional, Li, N., additional, Li, P. R., additional, Li, R. H., additional, Li, S., additional, Li, T., additional, Li, W. J., additional, Li, X., additional, Li, X. H., additional, Li, X. Q., additional, Li, Y., additional, Li, Y. Y., additional, Li, Z. J., additional, Liang, H., additional, Liang, J. H., additional, Liang, Y. T., additional, Liao, G. R., additional, Liao, L. Z., additional, Liao, Y., additional, Lin, C. X., additional, Lin, D. X., additional, Lin, X. S., additional, Liu, B. J., additional, Liu, C. W., additional, Liu, D., additional, Liu, F., additional, Liu, G. M., additional, Liu, H. B., additional, Liu, J., additional, Liu, J. J., additional, Liu, J. B., additional, Liu, K., additional, Liu, K. Y., additional, Liu, L., additional, Liu, Q., additional, Liu, S. B., additional, Liu, T., additional, Liu, X., additional, Liu, Y. W., additional, Liu, Y., additional, Liu, Y. L., additional, Liu, Z. Q., additional, Liu, Z. Y., additional, Liu, Z. W., additional, Logashenko, I., additional, Long, Y., additional, Lu, C. G., additional, Lu, J. X., additional, Lu, N., additional, Lü, Q. F., additional, Lu, Y., additional, Lu, Z., additional, Lukin, P., additional, Luo, F. J., additional, Luo, T., additional, Luo, X. F., additional, Lyu, H. J., additional, Lyu, X. R., additional, Ma, J. P., additional, Ma, P., additional, Ma, Y., additional, Ma, Y. M., additional, Maas, F., additional, Malde, S., additional, Matvienko, D., additional, Meng, Z. X., additional, Mitchell, R., additional, Nefediev, A., additional, Nefedov, Y., additional, Olsen, S. L., additional, Ouyang, Q., additional, Pakhlov, P., additional, Pakhlova, G., additional, Pan, X., additional, Pan, Y., additional, Passemar, E., additional, Pei, Y. P., additional, Peng, H. P., additional, Peng, L., additional, Peng, X. Y., additional, Peng, X. J., additional, Peters, K., additional, Pivovarov, S., additional, Pyata, E., additional, Qi, B. B., additional, Qi, Y. Q., additional, Qian, W. B., additional, Qian, Y., additional, Qiao, C. F., additional, Qin, J. J., additional, Qin, L. Q., additional, Qin, X. S., additional, Qiu, T. L., additional, Rademacker, J., additional, Redmer, C. F., additional, Sang, H. Y., additional, Saur, M., additional, Shan, W., additional, Shan, X. Y., additional, Shang, L. L., additional, Shao, M., additional, Shekhtman, L., additional, Shen, C. P., additional, Shen, J. M., additional, Shen, Z. T., additional, Shi, H. C., additional, Shi, X. D., additional, Shwartz, B., additional, Sokolov, A., additional, Song, J. J., additional, Song, W. M., additional, Song, Y., additional, Song, Y. X., additional, Sukharev, A., additional, Sun, J. F., additional, Sun, L., additional, Sun, X. M., additional, Sun, Y. J., additional, Sun, Z. P., additional, Tang, J., additional, Tang, S. S., additional, Tang, Z. B., additional, Tian, C. H., additional, Tian, J. S., additional, Tian, Y., additional, Tikhonov, Y., additional, Todyshev, K., additional, Uglov, T., additional, Vorobyev, V., additional, Wan, B. D., additional, Wang, B. L., additional, Wang, B., additional, Wang, D. Y., additional, Wang, G. Y., additional, Wang, G. L., additional, Wang, H. L., additional, Wang, J., additional, Wang, J. H., additional, Wang, J. C., additional, Wang, M. L., additional, Wang, R., additional, Wang, S. B., additional, Wang, W., additional, Wang, W. P., additional, Wang, X. C., additional, Wang, X. D., additional, Wang, X. L., additional, Wang, X. P., additional, Wang, X. F., additional, Wang, Y. D., additional, Wang, Y. P., additional, Wang, Y. Q., additional, Wang, Y. L., additional, Wang, Y. G., additional, Wang, Z. Y., additional, Wang, Z. L., additional, Wang, Z. G., additional, Wei, D. H., additional, Wei, X. L., additional, Wei, X. M., additional, Wen, Q. G., additional, Wen, X. J., additional, Wilkinson, G., additional, Wu, B., additional, Wu, J. J., additional, Wu, L., additional, Wu, P., additional, Wu, T. W., additional, Wu, Y. S., additional, Xia, L., additional, Xiang, T., additional, Xiao, C. W., additional, Xiao, D., additional, Xiao, M., additional, Xie, K. P., additional, Xie, Y. H., additional, Xing, Y., additional, Xing, Z. Z., additional, Xiong, X. N., additional, Xu, F. R., additional, Xu, J., additional, Xu, L. L., additional, Xu, Q. N., additional, Xu, X. C., additional, Xu, X. P., additional, Xu, Y. C., additional, Xu, Y. P., additional, Xu, Y., additional, Xu, Z. Z., additional, Xuan, D. W., additional, Xue, F. F., additional, Yan, L., additional, Yan, M. J., additional, Yan, W. B., additional, Yan, W. C., additional, Yan, X. S., additional, Yang, B. F., additional, Yang, C., additional, Yang, H. J., additional, Yang, H. R., additional, Yang, H. T., additional, Yang, J. F., additional, Yang, S. L., additional, Yang, Y. D., additional, Yang, Y. H., additional, Yang, Y. S., additional, Yang, Y. L., additional, Yang, Z. W., additional, Yang, Z. Y., additional, Yao, D. L., additional, Yin, H., additional, Yin, X. H., additional, Yokozaki, N., additional, You, S. Y., additional, You, Z. Y., additional, Yu, C. X., additional, Yu, F. S., additional, Yu, G. L., additional, Yu, H. L., additional, Yu, J. S., additional, Yu, J. Q., additional, Yuan, L., additional, Yuan, X. B., additional, Yuan, Z. Y., additional, Yue, Y. F., additional, Zeng, M., additional, Zeng, S., additional, Zhang, A. L., additional, Zhang, B. W., additional, Zhang, G. Y., additional, Zhang, G. Q., additional, Zhang, H. J., additional, Zhang, H. B., additional, Zhang, J. Y., additional, Zhang, J. L., additional, Zhang, J., additional, Zhang, L., additional, Zhang, L. M., additional, Zhang, Q. A., additional, Zhang, R., additional, Zhang, S. L., additional, Zhang, T., additional, Zhang, X., additional, Zhang, Y., additional, Zhang, Y. J., additional, Zhang, Y. X., additional, Zhang, Y. T., additional, Zhang, Y. F., additional, Zhang, Y. C., additional, Zhang, Y. M., additional, Zhang, Y. L., additional, Zhang, Z. H., additional, Zhang, Z. Y., additional, Zhao, H. Y., additional, Zhao, J., additional, Zhao, L., additional, Zhao, M. G., additional, Zhao, Q., additional, Zhao, R. G., additional, Zhao, R. P., additional, Zhao, Y. X., additional, Zhao, Z. G., additional, Zhao, Z. X., additional, Zhemchugov, A., additional, Zheng, B., additional, Zheng, L., additional, Zheng, Q. B., additional, Zheng, R., additional, Zheng, Y. H., additional, Zhong, X. H., additional, Zhou, H. J., additional, Zhou, H. Q., additional, Zhou, H., additional, Zhou, S. H., additional, Zhou, X., additional, Zhou, X. K., additional, Zhou, X. P., additional, Zhou, X. R., additional, Zhou, Y. L., additional, Zhou, Y., additional, Zhou, Y. X., additional, Zhou, Z. Y., additional, Zhu, J. Y., additional, Zhu, K., additional, Zhu, R. D., additional, Zhu, R. L., additional, Zhu, S. H., additional, Zhu, Y. C., additional, Zhu, Z. A., additional, Zhukova, V., additional, Zhulanov, V., additional, Zou, B. S., additional, and Zuo, Y. B., additional

Published
2023
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26. Optimal Storage and Retrieval of Single-Photon Waveforms

Author

Zhou, Shuyu, Zhang, Shanchao, Liu, Chang, Chen, J. F., Wen, Jianming, Loy, M. M. T., Wong, G. K. L., and Du, Shengwang

Subjects
Quantum Physics
Abstract

We report an experimental demonstration of optimal storage and retrieval of heralded single-photon wave packets using electromagnetically induced transparency (EIT) in cold atoms at a high optical depth. We obtain an optimal storage efficiency of (49+/-3)% for single-photon waveforms with a temporal likeness of 96%. Our result brings the EIT quantum light-matter interface close to practical quantum information applications., Comment: 5 pages, 4 figures

Published
2012
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42. SU(2)-in-SU(1,1) Nested Interferometer for High Sensitivity, Loss-Tolerant Quantum Metrology

Author

Du, Wei, Kong, Jia, Bao, Guzhi, Yang, Peiyu, Jia, Jun, Ming, Sheng, Yuan, Chun-Hua, Chen, J. F., Ou, Z. Y., Mitchell, Morgan W., and Zhang, Weiping

Subjects
010309 optics, Quantum Physics, 0103 physical sciences, Astrophysics::Instrumentation and Methods for Astrophysics, Physics::Optics, FOS: Physical sciences, General Physics and Astronomy, Quantum Physics (quant-ph), 010306 general physics, 01 natural sciences
Abstract

We present experimental and theoretical results on a new interferometer topology that nests a SU(2) interferometer, e.g., a Mach-Zehnder or Michelson interferometer, inside a SU(1,1) interferometer, i.e., a Mach-Zehnder interferometer with parametric amplifiers in place of beam splitters. This SU(2)-in-SU(1,1) nested interferometer (SISNI) simultaneously achieves high signal-to-noise ratio (SNR), sensitivity beyond the standard quantum limit (SQL) and tolerance to photon losses external to the interferometer, e.g., in detectors. We implement a SISNI using parametric amplification by four-wave mixing (FWM) in Rb vapor and a laser-fed Mach-Zehnder SU(2) interferometer. We observe path-length sensitivity with SNR 2.2 dB beyond the SQL at power levels (and thus SNR) 2 orders of magnitude beyond those of previous loss-tolerant interferometers. We find experimentally the optimal FWM gains and find agreement with a minimal quantum noise model for the FWM process. The results suggest ways to boost the in-practice sensitivity of high-power interferometers, e.g., gravitational wave interferometers, and may enable high-sensitivity, quantum-enhanced interferometry at wavelengths for which efficient detectors are not available., 6 pages + 4 of supplemental material, 5 figures

Published
2022
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49. Customized Treatment Using Microfocused Ultrasound with Visualization for Optimized Patient Outcomes: A Review of Skin-tightening Energy Technologies and a Pan-Asian Adaptation of the Expert Panel's Gold Standard Consensus

Author

Park, J. -Y, Lin, F., Suwanchinda, A., Rungsima Wanitphakdeedecha, Yu, J., Lim, T. S., Chen, J. F., Ho, W., Lim, J., Juniarty, L., Kee, Y. S., Youn, S. J., and Fabi, S.

Subjects
Consensus
Abstract

BACKGROUND: Noninvasive facial-rejuvenation devices, such as nonablative radiofrequency (RF) and laser-assisted technology, are increasingly replacing higher-risk surgeries for face and body skin laxity. OBJECTIVE: We sought to review published information on noninvasive energy device safety and efficacy in aesthetic skin tightening, compare these with our experiences in Asian patients, and disseminate a consensus for optimizing microfocused ultrasound with visualization (MFU-V) in Asian patients. METHODS: A broad, nonexhaustive, nonsystematic literature search of published studies indexed in PubMed was performed to compare selected energy technologies to MFU-V for noninvasive face and body skin tightening, in particular, among Asian patients. This was supplemented with internal documents to provide evidence and support arguments if no peer-reviewed data were available. RESULTS: We highlighted the differences between devices and platforms and identified factors requiring attention and caution. Due to the increase in new devices lacking strong supporting clinical evidence of both safety and efficacy in Asia, it is necessary to convene physicians with substantial experience in MFU-V and devise a consensus on Asian patient selection, treatment planning, and customization. CONCLUSION: Many platforms duplicate or claim similar technologies, efficacy, or safety without significant peer-reviewed scientific or clinical evidence. We showed that MFU-V satisfies this clinical imperative. Further, the patented DeepSEE(®) technology allows users to noninvasively "see" through the skin to ensure treatment precision, facilitate optimal skin lifting and tightening, and enhance patient comfort and safety. Therefore, we believe that MFU-V is the gold standard for nonsurgical lifting and skin tightening.

Published
2021

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