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Advances in InGaAs/InP single-photon detector systems for quantum communication

Light(Science & Applications) 2015年第1期4卷 381-393页

作者： Jun Zhang Mark A Itzler hugo zbinden Jian-Wei Pan Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics University of Science and Technology of ChinaHefeiAnhui 230026China CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefeiAnhui 230026China Princeton Lightwave Inc. 2555 US Route 130 S.CranburyNJ 08540 USA Group of Applied Physics University of GenevaGeneva CH-1211Switzerland

Single-photon detectors(SPDs)are the most sensitive instruments for light detection.In the near-infrared range,SPDs based on III–V compound semiconductor avalanche photodiodes have been extensively used during the past two decades for diverse applications due to their advantages in practicality including small size,low cost and easy operation.In the past decade,the rapid developments and increasing demands in quantum information science have served as key drivers to improve the device performance of single-photon avalanche diodes and to invent new avalanche quenching techniques.This Review aims to introduce the technology advances of InGaAs/InP single-photon detector systems in the telecom wavelengths and the relevant quantum communication applications,and particularly to highlight recent emerging techniques such as high-frequency gating at GHz rates and free-running operation using negative-feedback avalanche diodes.Future perspectives of both the devices and quenching techniques are summarized.

关键词： avalanche photodiode detector InGaAs/InP quantum communication single-photon avalanche diode single-photon detection

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High-speed integrated QKD system

引用

Photonics Research 2023年第6期11卷 1007-1014页

作者： REBECKA SAX ALBERTO BOARON GIANLUCA BOSO SIMONE ATZENI ANDREA CRESPI FADRI GRÜNENFELDER DAVIDE RUSCA AWS AL-SAADI DANILO BRONZI SEBASTIAN KUPIJAI HANJO RHEE ROBERTO OSELLAME hugo zbinden Group of Applied Physics University of Geneva1205 GenèveSwitzerland ID Quantique SA 1227 GenèveSwitzerland Institute for Photonics and Nanotechnologies and NO-IFN CNR-IFN20133 MilanoItaly Dipartimento di Fisica Politecnico di Milano20133 MilanoItaly Sicoya GmbH 12489 BerlinGermany

Quantum key distribution(QKD)is nowadays a well-established method for generating secret keys at a distance in an information-theoretically secure way,as the secrecy of QKD relies on the laws of quantum physics and not on computational complexity.In order to industrialize QKD,low-cost,mass-manufactured,and practical QKD setups are required.Hence,photonic and electronic integration of the sender's and receiver's respective components is currently in the spotlight.Here we present a high-speed(2.5 GHz)integrated QKD setup featuring a transmitter chip in silicon photonics allowing for high-speed modulation and accurate state preparation,as well as a polarization-independent low-loss receiver chip in aluminum borosilicate glass fabricated by the femtosecond laser micromachining technique.Our system achieves raw bit error rates,quantum bit error rates,and secret key rates equivalent to a much more complex state-of-the-art setup based on discrete components[A.Boaron et al.,Phys.Rev.Lett.121,190502(2018)].

关键词： technique QKD polarization

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