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Start Over Author "Franco N." Journal conference on lasers and electro-optics
37 results on '"Franco N."'

1. Mode-locked Phase Coherent Singly-Resonant Biphoton Frequency Comb

Author

Kai-Chi Chang, Xiang Cheng, Murat Can Sarihan, Wenting Wang, Franco N. C. Wong, Jeffrey H. Shapiro, and Chee Wei Wong

Abstract

We observed evidence of spectral-phase-coherence in a singly-resonant biphoton frequency comb’s second-order cross-correlation function, and we verified the state’s time-energy entanglement by measuring Franson interference in 2 time-bins that violate the Bell inequality.

Published
2022

2. A Phase-Coherent On-Chip Single-Photon SWAP Gate

Author

Xiang Cheng, Zhenda Xie, Kai-Chi Chang, Murat Can Sarihan, Yoo Seung Lee, Yongnan Li, Mingbin Yu, Dim-Lee Kwong, Jeffrey H. Shapiro, Franco N. C. Wong, and Chee Wei Wong

Abstract

We demonstrate a single-photon SWAP gate between polarization and spatial-momentum qubits on a silicon-on-oxide chip. Phase coherence of the SWAP gate operation is confirmed via single-photon self-interference, with visibility up to 98.89%.

Published
2022

3. A Phase-Coherent On-Chip Single-Photon SWAP Gate

Author

Cheng, Xiang, primary, Xie, Zhenda, additional, Chang, Kai-Chi, additional, Sarihan, Murat Can, additional, Lee, Yoo Seung, additional, Li, Yongnan, additional, Yu, Mingbin, additional, Kwong, Dim-Lee, additional, Shapiro, Jeffrey H., additional, Wong, Franco N. C., additional, and Wong, Chee Wei, additional

Published
2022
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5. Quantum State Tomography of an On-chip Polarization-Spatial Qubit SWAP Gate

Author

Franco N. C. Wong, Dim-Lee Kwong, Kai-Chi Chang, Mingbin Yu, Murat Can Sarihan, Chee Wei Wong, Yoo Seung Lee, XinAn Xu, Serdar Kocaman, Zhenda Xie, Jeffrey H. Shapiro, Yongnan Li, Xiang Cheng, and Abhinav Kumar Vinod

Subjects
Physics, Photon, business.industry, Optical computing, Optical polarization, Hardware_PERFORMANCEANDRELIABILITY, Quantum Physics, Quantum tomography, Quantum key distribution, Computer Science::Hardware Architecture, Computer Science::Emerging Technologies, Quantum state, Qubit, Logic gate, Hardware_INTEGRATEDCIRCUITS, Optoelectronics, Hardware_ARITHMETICANDLOGICSTRUCTURES, business, ComputingMethodologies_COMPUTERGRAPHICS, Hardware_LOGICDESIGN
Abstract

We experimentally demonstrate a chip-scale polarization to spatial-momentum qubit SWAP gate. High fidelity of the SWAP gate operation is confirmed by quantum state tomography, with average gate fidelity up to 97.30%.

Published
2021

6. High-dimensional Energy-time Entanglement Distribution via a Biphoton Frequency Comb

Author

Chee Wei Wong, Jeffrey H. Shapiro, Kai-Chi Chang, Xiang Cheng, Franco N. C. Wong, and Murat Can Sarihan

Subjects
Physics, Frequency comb, Distribution (number theory), Quantum mechanics, Visibility (geometry), Quantum Physics, Quantum channel, Quantum entanglement, Quantum key distribution, Energy (signal processing), Time–frequency analysis
Abstract

We report the first high-dimensional energy-time entanglement distribution with a singly-resonant biphoton frequency comb, demonstrating time-frequency Franson interferences with high visibility, and establishing a high-dimensional entanglement link.

Published
2021

7. Secure High Dimensional Quantum Key Distribution Based on Wavelength-Multiplexed Time-Bin Encoding

Author

Kai-Chi Chang, Xiang Cheng, Chee Wei Wong, Murat Can Sarihan, Franco N. C. Wong, and Changchen Chen

Subjects
Physics, Photon, Optics, Quantum cryptography, business.industry, Encoding (memory), Astronomical interferometer, Quantum key distribution, Photonics, business, Multiplexing, Computer Science::Cryptography and Security, Time-bin encoding
Abstract

We experimentally demonstrated high-dimensional quantum key distribution with wavelength-multiplexed time-bin encoding, with photon information efficiency up to 4.082 secure-key bits/photon and secure-key rate up to 237-kbit/s. Security will be verified with dual-basis Franson interferometers.

Published
2021

8. Cougate-Franson interferometry for testing nonlocality of time-energy entangled biphotons

Author

Changchen Chen, Jeffrey H. Shapiro, and Franco N. C. Wong

Subjects
Physics, Quantum nonlocality, Interferometry, Photon, Spontaneous parametric down-conversion, Quantum mechanics, Visibility (geometry), Quantum Physics, Quantum entanglement, Quantum key distribution, Computer Science::Databases, Parametric statistics
Abstract

We report the first experimental demonstration of a conjugate-Franson interferometer, i.e., a nonlocal interferometer that can certify time-energy entanglement. Our measured 96% visibility tightly bounds the temporal correlation of biphotons generated by spontaneous parametric down-conversion.

Published
2021

9. Quantification of High-dimensional Energy-time Entanglement in a Biphoton Frequency Comb

Author

Chee Wei Wong, Franco N. C. Wong, Tian Zhong, Murat Can Sarihan, Abhinav Kumar Vinod, Yan-Xiao Gong, Jeffrey H. Shapiro, Xiang Cheng, Kai-Chi Chang, and Zhenda Xie

Subjects
Physics, Frequency comb, Quantum mechanics, Frequency domain, High dimensional, Quantum channel, Quantum entanglement, Quantum key distribution, Interference (wave propagation), Energy (signal processing)
Abstract

We quantify high-dimensional energy-time entanglement with a filtered biphoton frequency comb. Franson interference measurements are performed, with the entanglement of formation up to 1.89 ± 0.03 ebits for a 45.32 GHz biphoton frequency comb.

Published
2021

10. An Efficient On-chip Single-photon SWAP Gate for Entanglement Manipulation

Author

Franco N. C. Wong, Chee Wei Wong, Murat Can Sarihan, Mingbin Yu, Yoo Seung Lee, Dim-Lee Kwong, Xiang Cheng, Jeffrey H. Shapiro, Zhenda Xie, Abhinav Kumar, Kai-Chi Chang, Yongnan Li, Serdar Kocaman, and Tian Zhong

Subjects
Physics, Hardware_MEMORYSTRUCTURES, Photon, business.industry, Quantum Physics, Quantum entanglement, Polarization (waves), Computer Science::Hardware Architecture, Computer Science::Emerging Technologies, Logic gate, Qubit, Hardware_INTEGRATEDCIRCUITS, Optoelectronics, System on a chip, Hardware_ARITHMETICANDLOGICSTRUCTURES, Photonics, business, ComputingMethodologies_COMPUTERGRAPHICS, Hardware_LOGICDESIGN, Quantum computer
Abstract

We demonstrate an on-chip single photon SWAP gate between polarization and spatial-momentum qubit. Our SWAP gate shows gate fidelity of 97.44%, and polarization entanglement preservation of SWAP operation is confirmed with average visibility over 98%.

Published
2020

11. Frequency-Multiplexed Rate-Adaptive Quantum Key Distribution with High-Dimensional Encoding

Author

Changchen Chen, Yoo Seung Lee, Jeffrey H. Shapiro, Kai-Chi Chang, Hongchao Zhou, Xiang Cheng, Zheshen Zhang, Chee Wei Wong, Tian Zhong, Franco N. C. Wong, and Murat Can Sarihan

Subjects
business.industry, Computer science, Detector, Physics::Optics, Quantum Physics, Quantum channel, Quantum entanglement, Quantum key distribution, Multiplexing, Encoding (memory), Electronic engineering, Physics::Chemical Physics, Photonics, business, Computer Science::Information Theory, Computer Science::Cryptography and Security, Communication channel
Abstract

We offer a photon-efficient QKD protocol based on energy-time entangled biphoton frequency combs that supports multiplexing and rate adaptivity under various channel conditions.

Published
2020

12. High-Dimensional Time-Frequency Entanglement and Schmidt Number Witnesses Using a Biphoton Frequency Comb

Author

Franco N. C. Wong, Kai-Chi Change, Chee Wei Wong, Xiang Cheng, Tian Zhong, Yan-Xiao Gong, Yoo Seung Lee, Jeffrey H. Shapiro, Murat Can Sarihan, Zhenda Xie, and Abhinav Kumar

Subjects
Physics, Schmidt number, Hilbert space, Quantum Physics, 02 engineering and technology, Quantum entanglement, 021001 nanoscience & nanotechnology, Interference (wave propagation), 01 natural sciences, Time–frequency analysis, 010309 optics, Frequency comb, symbols.namesake, Quantum mechanics, 0103 physical sciences, symbols, 0210 nano-technology, Radiant intensity, Curse of dimensionality
Abstract

We demonstrated high-dimensional time-frequency entanglement with a mode-locked biphoton frequency comb. Hong-Ou-Mandel interference and joint spectral intensity measurements are performed, and we estimated Hilbert space dimensionality of at least 3481 via Schmidt mode decompositions.

Published
2020

13. Photon-Number Resolution Using Superconducting Tapered Nanowire Detector

Author

Matthew D. Shaw, Karl K. Berggren, Changchen Chen, Boris Korzh, Marco Colangelo, Di Zhu, and Franco N. C. Wong

Subjects
Physics, Photon, business.industry, Resolution (electron density), Detector, Nanowire, Physics::Optics, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Photon counting, Condensed Matter::Materials Science, Optics, Amplitude, Spontaneous parametric down-conversion, Physics::Accelerator Physics, Coherent states, business
Abstract

We show that a superconducting nanowire with an integrated impedance-matching taper can resolve photon numbers. The taper increases the nanowire detector’s output amplitude and makes it sensitive to the number of single-photon-induced hotspots.

Published
2020

15. Quantum State Tomography of an On-chip Polarization-Spatial Qubit SWAP Gate

Author

Cheng, Xiang, primary, Xie, Zhenda, additional, Chang, Kai-Chi, additional, Sarihan, Murat Can, additional, Lee, Yoo Seung, additional, Vinod, Abhinav Kumar, additional, Li, Yongnan, additional, Xu, XinAn, additional, Kocaman, Serdar, additional, Yu, Mingbin, additional, Kwong, Dim-Lee, additional, Shapiro, Jeffrey H., additional, Wong, Franco N. C., additional, and Wong, Chee Wei, additional

Published
2021
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19. Edge-Resolved Transient Imaging

Author

Saunders, Charles, primary, Rapp, Joshua, additional, Tachella, Julián, additional, Murray-Bruce, John, additional, Altmann, Yoann, additional, Tourneret, Jean-Yves, additional, McLaughlin, Stephen, additional, Dawson, Robin M. A., additional, Wong, Franco N. C., additional, and Goyal, Vivek K, additional

Published
2021
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22. An Efficient On-chip Single-photon SWAP Gate for Entanglement Manipulation

Author

Cheng, Xiang, primary, Chang, Kai-Chi, additional, Xie, Zhenda, additional, Lee, Yoo Seung, additional, Sarihan, Murat Can, additional, Kumar, Abhinav, additional, Li, Yongnan, additional, Kocaman, Serdar, additional, Zhong, Tian, additional, Yu, Mingbin, additional, Kwong, Dim-Lee, additional, Shapiro, Jeffrey H., additional, Wong, Franco N. C., additional, and Wong, Chee Wei, additional

Published
2020
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25. Experimental Quantum Key Distribution at 1.3 Gbit/s Secret-Key Rate over a 10-dB-Loss Channel

Author

Jane E. Heyes, Quntao Zhuang, Changchen Chen, Jeffrey H. Shapiro, Zheshen Zhang, and Franco N. C. Wong

Subjects
Photon, Computer science, business.industry, Data_CODINGANDINFORMATIONTHEORY, 02 engineering and technology, Quantum key distribution, 021001 nanoscience & nanotechnology, 01 natural sciences, 010309 optics, Gigabit, Encoding (memory), 0103 physical sciences, Key (cryptography), Electronic engineering, Photonics, 0210 nano-technology, business, Bit (key), Communication channel
Abstract

We demonstrate quantum key distribution at 1.3-Gbit/s secret-key rates over a 10-dB-loss channel. By transmitting many photons per bit with multi-mode encoding our protocol overcomes channel loss to achieve gigabit-per-second rates without compromising security.

Published
2018

26. High-visibility interference between two heralded pure-state photons without spectral filtering

Author

Changchen Chen, Jeffrey H. Shapiro, and Franco N. C. Wong

Subjects
Physics, Photon, business.industry, Gaussian, Bandwidth (signal processing), Spectral properties, Quantum Physics, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, 010309 optics, symbols.namesake, Optics, Spontaneous parametric down-conversion, 0103 physical sciences, symbols, Photonics, 0210 nano-technology, business, Diffraction grating, Parametric statistics
Abstract

We measure 90% visibility in Hong-Ou-Mandel interference between two independent heralded single photons from pulsed spontaneous parametric downconversion with a Gaussian spectral phase-matching profile, and study its dependence on the pump spectral properties.

Published
2018

28. Variational Quantum Unsampling on a Programmable Nanophotonic Processor

Author

Carolan, Jacques, primary, Mosheni, Masoud, additional, Olson, Jonathan P., additional, Prabhu, Mihika, additional, Chen, Changchen, additional, Bunandar, Darius, additional, Harris, Nicholas C., additional, Wong, Franco N. C., additional, Hochberg, Michael, additional, Lloyd, Seth, additional, and Englund, Dirk, additional

Published
2019
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29. A chip-scale single-photon SWAP gate as integrated interface between polarization and spatial-momentum qubits

Author

Zhenda Xie, Chee Wei Wong, Mingbin Yu, Tian Zhong, Dim-Lee Kwong, XinAn Xu, Yongnan Li, Andrzej Veitia, Abhinav Kumar, Serdar Kocaman, and Franco N. C. Wong

Subjects
Physics, Photon, business.industry, Physics::Optics, Silicon on insulator, Error ratio, 02 engineering and technology, 021001 nanoscience & nanotechnology, Chip, Polarization (waves), 01 natural sciences, Computer Science::Other, 010309 optics, Computer Science::Hardware Architecture, Phase coherence, Optics, Qubit, 0103 physical sciences, 0210 nano-technology, business, Swap (computer programming)
Abstract

We demonstrate a single-photon SWAP gate between polarization and spatial momentum on a SOI chip. 19.8% error ratio is obtained, and phase coherence of the SWAP operation is measured via single photon interference with up to 58.7% visibility.

Published
2017

30. Generation and characterization of factorable biphotons with 99% spectral purity

Author

Cao Bo, Murphy Yuezhen Niu, Feihu Xu, Zheshen Zhang, Changchen Chen, Jeffrey H. Shapiro, and Franco N. C. Wong

Subjects
Photon, Materials science, business.industry, Gaussian, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Measure (mathematics), 010309 optics, symbols.namesake, Optics, Polarization mode dispersion, 0103 physical sciences, symbols, 0210 nano-technology, business, Radiant intensity, Diffraction grating, Spectral purity, Parametric statistics
Abstract

We generate biphotons via pulsed spontaneous parametric downconversion under extended Gaussian phase matching, and measure their joint spectral intensity at high resolution using a low-loss dispersion compensation module to obtain a 99% heralded-state spectral purity.

Published
2017

32. High-rate large-alphabet quantum key distribution over deployed telecom fiber

Author

Franco N. C. Wong, Zheshen Zhang, P. Ben Dixon, Catherine Lee, Jeffrey H. Shapiro, Darius Bunandar, Scott A. Hamilton, Gregory R. Steinbrecher, and Dirk Englund

Subjects
High rate, Fiber (mathematics), business.industry, Computer science, Detector, Quantum key distribution, 01 natural sciences, Photon counting, 010309 optics, Modulation, 0103 physical sciences, Alphabet, 010306 general physics, Telecommunications, business, Protocol (object-oriented programming)
Abstract

We develop and implement a large-alphabet, dispersive-optics, prepare-and-measure quantum-key-distribution protocol. We demonstrate 35 Mbps secret-key rates in the laboratory and 300 kbps over a 43-km deployed fiber.

Published
2016

33. Demonstration of Loss-Tolerant Quantum Key Distribution

Author

Zheshen Zhang, Franco N. C. Wong, Jeffrey H. Shapiro, and Quntao Zhuang

Subjects
Physics, Quantum technology, Quantum network, Quantum cryptography, business.industry, Quantum mechanics, Quantum sensor, Electrical engineering, Quantum channel, Quantum capacity, Quantum information, Quantum key distribution, business
Abstract

We report the first demonstration of floodlight quantum key distribution, which thrives on sending many photons per bit to overcome propagation loss. We achieve 52Mb/s secret-key rate over a channel with 10 dB loss.

Published
2016

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