Quantum-correlated photon sources provide a means of suppressing multiple photon emission and thus improving the security and efficiency of quasi single-photon quantum key distribution systems. We present illustrative photon-counting statistics for a Poissonian source conditioned by photon number measurements on a fully correlated twin beam with a non-ideal photon counter. We show that high photon counting efficiency is needed to obtain significant improvement in channel efficiency (bits per symbol) and/or security (in the form of reduced Shannon entropy leakage) over a single beam source.
Transmitter-device-independent quantum key distribution
Beijing Academy of Quantum Information Sciences（北京量子信息科学研究院）；Laboratoire d’Information Quantique, Université Libre de Bruxelles（布鲁塞尔自由大学量子信息实验室）；School of Science and State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications（北京邮电大学理学院信息光子学与光通信国家重点实验室）
Hong-Ou-Mandel test to verify indistinguishability of the states emitted from a quantum key distribution transmitter implementing decoy Bennett-Brassard 1984 protocol
Graduate School of Information Science and Technology, Hokkaido University（北海道大学信息科学技术研究生院）；Faculty of Information Science and Technology, Hokkaido University（北海道大学信息科学技术学部）；NEC Corporation（日本电气株式会社）；National Institute of Information and Communications Technology（国立情报学研究所）
Numerical security analysis for practical quantum key distribution
Vigo Quantum Communication Center, University of Vigo（维戈量子通信中心，维戈大学）；School of Telecommunication Engineering, Department of Signal Theory and Communications, University of Vigo（维戈大学电信工程学院信号理论与通信系）；atlanTTic Research Center, University of Vigo（维戈大学atlanTTic研究中心）
Highly integrated quantum key distribution transmitter enabled by silicon photonics
University of Science and Technology of China（中国科学技术大学）；QuantumCTek Corporation Limited（国盾量子技术股份有限公司）；CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China（中国科学技术大学量子信息科学与技术全国重点实验室）；Hefei National Laboratory, University of Science and Technology of China（中国科学技术大学合肥国家实验室）
Finite-key security analysis of decoy-state QKD with source and detector imperfections
University of Vigo（维戈大学）；Vigo Quantum Communication Center, University of Vigo（维戈量子通信中心，维戈大学）；Escuela de Ingeniería de Telecomunicación, Department of Signal Theory and Communications, University of Vigo（电信工程学院，信号理论与通信系，维戈大学）；atlanTTic Research Center, University of Vigo（atlanTTic研究中心，维戈大学）
Power-consumption Backdoor in Quantum Key Distribution
Instituto Superior Técnico, Universidade de Lisboa（里斯本技术学院，里斯本大学）；Physics of Information and Quantum Technologies Group, Centro de Física e Engenharia de Materiais Avançados (CeFEMA)（信息与量子技术组，先进材料与工程物理中心）；PQI — Portuguese Quantum Institute（葡萄牙量子研究所）；Dipartimento di Ingegneria dell’Informazione, Università degli Studi di Padova（帕多瓦大学信息工程系）；Instituto de Engenharia de Sistemas e Computadores – Investigação e Desenvolvimento (INESC-ID)（系统工程与计算机研究所-研究与开发）；Padua Quantum Technologies Research Center, Università degli Studi di Padova（帕多瓦量子技术中心，帕多瓦大学）
Spectral Attack on Continuous-Variable Quantum Key Distribution Systems
Shanghai Jiao Tong University（上海交通大学）；Shanghai Research Center for Quantum Sciences（上海量子科学研究中心）；Hefei National Laboratory（合肥国家实验室）；Shanghai XunTai Quantech Co., Ltd（上海迅泰量子科技有限公司）
Security Risks of VOA-Induced Luminescence in Chip-Based quantum key distribution
Guangxi University（广西大学）；National Information Optoelectronics Innovation Center (NOEIC)（国家信息光电子创新中心）；China Information and Communication Technologies Group Corporation (CICT)（中国信息通信科技集团有限公司）
Unlocking Exponential and Unbounded Robust Gains in Shannon Capacity of Classical Multiple Access Channels with Causal CSIT via Quantum Entanglement Assistance
