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131 results on '"Acconcia, Giulia"'

1. Recent advances and future perspectives of single-photon avalanche diodes for quantum photonics applications

Author

Ceccarelli, Francesco, Acconcia, Giulia, Gulinatti, Angelo, Ghioni, Massimo, Rech, Ivan, and Osellame, Roberto

Subjects
Physics - Instrumentation and Detectors, Physics - Applied Physics, Physics - Optics, Quantum Physics
Abstract

Photonic quantum technologies promise a revolution of the world of information processing, from simulation and computing to communication and sensing, thanks to the many advantages of exploiting single photons as quantum information carriers. In this scenario, single-photon detectors play a key role. On the one hand, superconducting nanowire single-photon detectors (SNSPDs) are able to provide remarkable performance on a broad spectral range, but their applicability is often limited by the need of cryogenic operating temperatures. On the other hand, single-photon avalanche diodes (SPADs) overcome the intrinsic limitations of SNSPDs by providing a valid alternative at room temperature or slightly below. In this paper, we review the fundamental principles of the SPAD operation and we provide a thorough discussion of the recent progress made in this field, comparing the performance of these devices with the requirements of the quantum photonics applications. In the end, we conclude with our vision of the future by summarizing prospects and unbeaten paths that can open new perspectives in the field of photonic quantum information processing.

Published
2020
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7. Double-Terminal Quenching Topology for Threefold After-Pulsing Reduction: Model and Experimental Validation

Author

Malanga, Francesco, Fratta, Gennaro, Laita, Gabriele, Gulinatti, Angelo, Acconcia, Giulia, and Rech, Ivan

Abstract

Single-photon avalanche diodes (SPADs) have emerged as crucial devices across a multitude of applications, ranging from fluorescence lifetime imaging (FLIM) to quantum technologies and light detection and ranging (LiDAR) systems. The increasing demand for fastening the acquisition rate of these applications has spurred significant interest in minimizing the SPAD dead time (DT) to a few nanoseconds. However, attempts to minimize its duration often exacerbate the after-pulsing (AP) phenomenon, posing a significant challenge in optimizing system performance. In this article, we propose a novel strategy to address this trade-off. We introduce a method that exploits passive or active quenching at the cathode terminal of SPADs, combined with an active quenching circuit (AQC) at the anode node. This combined approach aims at mitigating AP effects while simultaneously minimizing DT. We developed a comprehensive model and validation methodology to rigorously evaluate the effectiveness of this strategy. Finally, we demonstrate that how it is possible to achieve a strong reduction inAP compared with standard approaches.

Published
2024
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12. Toward Constraintless Time-Correlated Single-Photon Counting Measurements: A New Method to Remove Pile-Up Distortion

Author

Rech, Ivan, Bovolenta, Angela, Cominelli, Alessandro, and Acconcia, Giulia

Abstract

Time-Correlated Single-Photon Counting (TCSPC) is a well-renowned technique allowing to reconstruct light signals with high sensitivity and resolution. Nevertheless, to this day, its use in applications requiring a fast analysis of the sample is limited due to its long acquisition time. The reason is twofold: on one hand, it is based on a statistical method thus requiring the collection of a large number of events to properly reconstruct the signal waveform; on the other hand, the average number of photons impinging on the sensor has to be kept particularly low to avoid artifacts. Indeed, the existence of dead time of both single-photon detectors and electronics can lead to distortion in the reconstructed waveform, which can be mitigated only if the count rate is kept below few percent of the excitation frequency. Recently, it has been demonstrated that an appropriate tuning of detector dead time allows to remove such power restriction, but, unfortunately, this constraint also sets a limit to the maximum count rate of the detector. In this paper, we present a novel method for TCSPC measurements, which ensures negligible distortion at unprecedented rates without requiring any constraint on either illumination power or detector dead time. We will show that this is possible thanks to the acquisition of additional information on the status of TCSPC system. The theoretical analysis reported in this paper is supported by analytical computation and numerical simulation, taking into account also potential non idealities of a real implementation.

Published
2024
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13. A 4.5 Ps Precision TCSPC System: Design Principles and Characterization

Author

Farina, Serena, Labanca, Ivan, Acconcia, Giulia, and Rech, Ivan

Abstract

With the recent advancements in single-photon detectors, very low-jitter timing systems are required to fully exploit their performance in real applications. In this article, we present the design principles and experimental characterization of a single-channel time-correlated single-photon counting (TCSPC) system, that achieves a jitter down to 4.5 ps FWHM, a peak-to-peak differential nonlinearity of 1.5% LSB and a count rate of 12 Mcps over a nanoseconds full-scale range. These results have been attained by minimizing the different jitter contributions that are introduced at various levels in the whole timing chain, still without trading them off with the other performance parameters. To the best of our knowledge, this work represents the state-of-the-art performance in case of a full-scale range as large as 12.5 ns.

Published
2024
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31. Configurable multichannel time-to-amplitude converter for advanced TCSPC applications

Author

Buller, Gerald S., Hollins, Richard C., Lamb, Robert A., Laurenzis, Martin, Salmon, Neil A., Gumbmann, Frank, Zamboni, Roberto, Andraud, Chantal, Szep, Attila A., Alsing, Paul M., Fanto, Michael L., Rarity, John G., Camposeo, Andrea, Persano, Luana, Busse, Lynda E., Farsari, Maria, Malanga, Francesco, Acconcia, Giulia, Farina, Serena, Ghioni, Massimo, and Rech, Ivan

Published
2022
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32. A 150nm fully integrated active quenching circuit driving custom technology SPAD at 250Mcps

Author

Buller, Gerald S., Hollins, Richard C., Lamb, Robert A., Laurenzis, Martin, Salmon, Neil A., Gumbmann, Frank, Zamboni, Roberto, Andraud, Chantal, Szep, Attila A., Alsing, Paul M., Fanto, Michael L., Rarity, John G., Camposeo, Andrea, Persano, Luana, Busse, Lynda E., Farsari, Maria, Giudici, Andrea, Acconcia, Giulia, Labanca, Ivan, Ghioni, Massimo, and Rech, Ivan

Published
2022
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38. Relocating single-molecules in super-resolved fluorescence lifetime images near a plasmonic nanostructure

Author

Blanquer, Guillaume, Van Dam, Bart, Gulinatti, Angelo, Acconcia, Giulia, De Wilde, Yannick, Izeddin, Ignacio, Krachmalnicoff, Valentina, Institut Langevin - Ondes et Images (UMR7587) (IL), Sorbonne Université (SU)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Paris (UP)-Centre National de la Recherche Scientifique (CNRS), and Politecnico di Milano [Milan] (POLIMI)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2020

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