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Pregled bibliografske jedinice broj: 904491

Advanced active quenching circuit for ultra-fast quantum cryptography


Stipčević, Mario; Christensen, Brad G.; Kwiat, Paul G.; Gauthier, Daniel G.
Advanced active quenching circuit for ultra-fast quantum cryptography // Optics express, 25 (2017), 2; 21861-21876 doi:10.1364/OE.25.021861 (međunarodna recenzija, članak, znanstveni)


Naslov
Advanced active quenching circuit for ultra-fast quantum cryptography

Autori
Stipčević, Mario ; Christensen, Brad G. ; Kwiat, Paul G. ; Gauthier, Daniel G.

Izvornik
Optics express (1094-4087) 25 (2017), 2; 21861-21876

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Photon counting ; Avalanche photodiodes (APDs) ; Quantum cryptography ; Photodetectors ; Quantum detectors ; Quantum information and processing

Sažetak
Commercial photon-counting modules based on actively quenched solid-state avalanche photodiode sensors are used in a wide variety of applications. Manufacturers characterize their detectors by specifying a small set of parameters, such as detection efficiency, dead time, dark counts rate, afterpulsing probability and single-photon arrival-time resolution (jitter). However, they usually do not specify the range of conditions over which these parameters are constant or present a sufficient description of the characterization process. In this work, we perform a few novel tests on two commercial detectors and identify an additional set of imperfections that must be specified to sufficiently characterize their behavior. These include rate-dependence of the dead time and jitter, detection delay shift, and “twilighting”. We find that these additional non-ideal behaviors can lead to unexpected effects or strong deterioration of the performance of a system using these devices. We explain their origin by an in-depth analysis of the active quenching process. To mitigate the effects of these imperfections, a custom-built detection system is designed using a novel active quenching circuit. Its performance is compared against two commercial detectors in a fast quantum key distribution system with hyper- entangled photons and a random number generator.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
533-19-14-0002

Ustanove
Institut "Ruđer Bošković", Zagreb

Autor s matičnim brojem:
Mario Stipčević, (180974)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


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