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Measurement-device-independent quantum key distribution (MDI-QKD) removes all detector side channels and enables secure QKD with an untrusted relay. It is suitable for building a star-type quantum access network, where the complicated and…

We experimentally realize a measurement-device-independent quantum key distribution (MDI-QKD) system based on cost-effective and commercially available hardware such as distributed feedback (DFB) lasers and field-programmable gate arrays…

Variations of phase-matching measurement-device-independent quantum key distribution (PM-MDI QKD) protocols have been investigated before, but it was recently discovered that this type of protocol (under the name of twin-field QKD) can beat…

Quantum Physics · Physics 2018-10-30 Jie Lin , Norbert Lütkenhaus

There is a big gap between theory and practice in quantum key distribution (QKD) because real devices do not satisfy the assumptions required by the security proofs. Here, we close this gap by introducing a simple and practical…

Quantum Physics · Physics 2021-03-31 Álvaro Navarrete , Margarida Pereira , Marcos Curty , Kiyoshi Tamaki

Advances in quantum computing are a rapidly growing threat towards modern cryptography. Quantum key distribution (QKD) provides long-term security without assuming the computational power of an adversary. However, inconsistencies between…

Quantum Physics · Physics 2019-01-18 Henry Semenenko , Philip Sibson , Mark G. Thompson , Chris Erven

We propose and experimentally implement a novel reconfigurable quantum key distribution (QKD) scheme, where the users can switch in real time between conventional QKD and the recently-introduced measurement-device-independent (MDI) QKD.…

A novel protocol - measurement-device-independent quantum key distribution (MDI-QKD) - removes all attacks from the detection system, the most vulnerable part in QKD implementations. In this paper, we present an analysis for practical…

Quantum Physics · Physics 2013-11-14 Feihu Xu , Marcos Curty , Bing Qi , Hoi-Kwong Lo

Measurement-device-independent quantum secret sharing (MDI-QSS) can eliminate all the security loopholes associated with imperfect measurement devices and greatly enhance QS's security under practical experimental condition. MDI-QSS…

Quantum Physics · Physics 2024-05-28 Cheng Zhang , Qi Zhang , Wei Zhong , Ming-Ming Du , Shu-Ting Shen , Xi-Yun Li , An-Lei Zhang , Lan Zhou , Yu-Bo Sheng

Measurement-device-independent quantum key distribution (MDI-QKD) is a technique for quantum-secured communication that eliminates all detector side-channels, although is currently limited by implementation complexity and low secure key…

The ability to communicate quantum information over long distances is of central importance in quantum science and engineering. For example, it enables secure quantum key distribution (QKD) relying on fundamental principles that prohibit…

The measurement-device-independent quantum key distribution (MDI-QKD) can be immune to all detector side-channel attacks. Moreover, it can be easily implemented combining with the matured decoy-state methods under current technology. It…

Quantum Physics · Physics 2021-08-11 Yi-Peng Chen , Jing-Yang Liu , Mingshuo Sun , Xing-Xu Zhou , Chun-Hui Zhang , Jian Li , Qin Wang

It is well known that the repeater node is an essential ingredient for the future global quantum network, which will enable high-rate private communication and entanglement distribution over very long distances. The near-term repeater…

Quantum Physics · Physics 2026-05-06 Zhiyue Zuo , Stefano Pirandola

Measurement-device-independent quantum key distribution (MDI-QKD) is the only known QKD scheme that can completely overcome the problem of detection side-channel attacks. Yet, despite its practical importance, there is no standard approach…

Continuous-variable measurement-independent-device quantum key distribution (CV-MDI-QKD) can offer high secure key rate at metropolitan distance and remove all side channel loopholes of detection as well. However, there is no complete…

Quantum Physics · Physics 2019-01-11 Hua-Lei Yin , Wei Zhu , Yao Fu

Measurement-device-independent quantum key distribution (MDI-QKD) protocol was proposed to remove all the detector side channel attacks, while its security relies on the trusted encoding systems. Here we propose a one-sided MDI-QKD…

Quantum Physics · Physics 2018-01-18 Wen-Fei Cao , Yi-Zheng Zhen , Yu-Lin Zheng , Li Li , Zeng-Bing Chen , Nai-Le Liu , Kai Chen

Quantum Key Distribution (QKD) is the only theoretically proven method for secure key distribution between two users. In this work, we propose and analyze a Measurement Device Independent (MDI) protocol designed to distribute keys among…

Quantum Physics · Physics 2025-04-10 N. Stefanakos , G. Maragkopoulos , A. Mandilara , D. Syvridis

Continuous-variable (CV) measurement-device-independent (MDI) quantum key distribution (QKD) is immune to imperfect detection devices, which can eliminate all kinds of attacks on practical detectors. Here we first propose a CV-MDI QKD…

Quantum Physics · Physics 2021-08-13 Dongyun Bai , Peng Huang , Yiqun Zhu , Hongxin Ma , Tailong Xiao , Tao Wang , Guihua Zeng

Measurement-device-independent quantum key distribution (MDI-QKD) is immune to all security loopholes on detection. Previous experiments on MDI-QKD required spatially separated signal lasers and complicated stabilization systems. In this…

Quantum Physics · Physics 2016-09-30 Guang-Zhao Tang , Shi-Hai Sun , Feihu Xu , Huan Chen , Chun-Yan Li , Lin-Mei Liang

Measurement-device-independent quantum key distribution (MDI-QKD) can eliminate all detector side-channel loopholes and has shown excellent performance in long-distance secret keys sharing. Conventional security proofs, however, require…

Quantum Physics · Physics 2022-02-09 Hua-Jian Ding , Xing-Yu Zhou , Chun-Hui Zhang , Jian Li , Qin Wang

Quantum key distribution (QKD) allows two distant parties to share encryption keys with security based on physical laws. Experimentally, it has been implemented with optical means, achieving key rates of 1.26 Megabit/s over 50 kilometres…

Quantum Physics · Physics 2018-11-19 Marco Lucamarini , Zhiliang Yuan , James F. Dynes , Andrew J. Shields