English
Related papers

Related papers: Finite-key analysis for measurement-device-indepen…

200 papers

Quantum Key Distribution (QKD) is a promising technology for secure communication. Nevertheless, QKD is still treated with caution in certain contexts due to potential gaps between theoretical models and actual QKD implementations. A common…

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

Device-independent quantum key distribution (QKD) can permit the superior security even with unknown devices. In practice, however, the realization of device-independent QKD is technically challenging because of its low noise tolerance. In…

Quantum Physics · Physics 2022-03-22 Feihu Xu , Yu-Zhe Zhang , Qiang Zhang , Jian-Wei Pan

Measurement-device-independent quantum key distribution (MDI-QKD) can provide enhanced security, as compared to traditional QKD, and it constitutes an important framework for a quantum network with an untrusted network server. Still, a key…

Quantum Physics · Physics 2015-09-04 Feihu Xu

Quantum key distribution (QKD) theoretically provides unconditional security between remote parties. However, guaranteeing practical security through device characterisation alone is challenging in real-world implementations due to the…

Quantum Physics · Physics 2025-04-29 Hao Dong , Cong Jiang , Di Ma , Chi Zhang , Jia Huang , Hao Li , Li-Xing You , Yang Liu , Xiang-Bin Wang , Qiang Zhang , Jian-Wei Pan

Measurement-device-independent quantum key distribution (MDIQKD) protocol is immune to all attacks on detection and guarantees the information-theoretical security even with imperfect single photon detectors. Recently, several…

We present a detailed description of a widely applicable mathematical model for quantum key distribution (QKD) systems implementing the measurement-device-independent (MDI) protocol. The model is tested by comparing its predictions with…

Quantum Physics · Physics 2014-05-22 Philip Chan , Joshua A. Slater , Itzel Lucio-Martinez , Allison Rubenok , Wolfgang Tittel

The ultimate aim of quantum key distribution (QKD) is improving the performance of transmission distance and key generation speed. Unfortunately, it is believed to be limited by the secret-key capacity of quantum channel without quantum…

Quantum Physics · Physics 2019-03-22 Hua-Lei Yin , Yao Fu

The lists of bits processed in quantum key distribution are necessarily of finite length. The need for finite-key unconditional security bounds has been recognized long ago, but the theoretical tools have become available only very…

Quantum Physics · Physics 2015-05-13 Raymond Y. Q. Cai , Valerio Scarani

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

In theory, quantum key distribution (QKD) promises unconditional secure generation of the key between two remote participants, based on the laws of quantum physics. However, because of the imperfections in the real-life implementation of…

Quantum Physics · Physics 2025-05-12 Mah Noor

Device-independent quantum key distribution (DI-QKD) leverages nonlocal correlations to establish cryptographic keys between two honest parties while making minimal assumptions about the underlying systems. The security of DI-QKD is…

Quantum Physics · Physics 2026-05-20 Pritam Roy , Souradeep Sasmal , Subhankar Bera , Shashank Gupta , Arup Roy , A. S. Majumdar

Quantum key distribution is a way to distribute secret keys to distant users with information theoretic security and key rates suitable for real-world applications. Its rate-distance figure, however, is limited by the natural loss of the…

Quantum Physics · Physics 2018-09-12 Kiyoshi Tamaki , Hoi-Kwong Lo , Wenyuan Wang , Marco Lucamarini

It has been widely claimed and believed that many protocols in quantum key distribution, especially the single-photon BB84 protocol, have been proved unconditionally secure at least in principle, for both asymptotic and finite protocols…

Quantum Physics · Physics 2012-07-03 Horace P. Yuen

Continuous variable quantum key distribution (CV-QKD), utilizes continuous variables encoding such as the quadra-ture components of the quantized electromagnetic field and coherent detection decoding, offering good compatibility with the…

Quantum Physics · Physics 2025-07-22 Pu Wang , Yan Tian , Yongmin Li

Quantum Key Distribution (QKD) is based on the laws of quantum mechanics to enable provably secure communication. Despite its theoretical security promise, practical QKD systems are vulnerable to serious attacks, including side-channel…

Quantum Physics · Physics 2025-05-21 Syed M. Arslan , Saif Al-Kuwari , M. T. Rahim , Hashir Kuniyal

Quantum key distribution (QKD) is the first quantum information task to reach the level of mature technology, already fit for commercialization. It aims at the creation of a secret key between authorized partners connected by a quantum…

Distributing secret keys with information-theoretic security is arguably one of the most important achievements of the field of quantum information processing and communications. The rapid progress in this field has enabled quantum key…

Detector-device-independent quantum key distribution (ddiQKD) held the promise of being robust to detector side-channels, a major security loophole in QKD implementations. In contrast to what has been claimed, however, we demonstrate that…

Quantum Physics · Physics 2016-12-21 Shihan Sajeed , Anqi Huang , Shihai Sun , Feihu Xu , Vadim Makarov , Marcos Curty

Quantum key distribution (QKD) is theoretically secure using the principle of quantum mechanics; therefore, QKD is a promising solution for the future of secure communication. Although several experimental demonstrations of QKD have been…

Quantum Physics · Physics 2022-02-02 Chunfeng Huang , Ye Chen , Long Jin , Minming Geng , Junwei Wang , Zhenrong Zhang , Kejin Wei