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The fabrication of quantum key distribution (QKD) systems typically involves several parties, thus providing Eve with multiple opportunities to meddle with the devices. As a consequence, conventional hardware and/or software hacking attacks…

Measurement-device-independent quantum key distribution (MDI-QKD) has been demonstrated in both laboratories and field-tests using attenuated lasers combined with the decoy-state technique. Although researchers have studied various…

Quantum Physics · Physics 2014-06-03 Feihu Xu , He Xu , Hoi-Kwong Lo

We study the security of a quantum key distribution (QKD) protocol under the one-sided device-independent (1sDI) setting, which assumes trust in only one party's measurement device. This approach effectively provides a balance between the…

Quantum Physics · Physics 2026-02-03 Pritam Roy , Subhankar Bera , A. S. Majumdar

Reference-Frame-Independent Quantum Key Distribution (RFI-QKD) provides a practical way to generate secret keys between two remote parties without sharing common reference frames. On the other hand, Measurement-Device-Independent QKD…

The mode pairing quantum key distribution (MP-QKD) protocol has attracted considerable attention for its capability to ensure high secure key rates over long distances without requiring global phase locking. However, ensuring symmetric…

Quantum Physics · Physics 2024-12-30 Zhenhua Li , Tianqi Dou , Yuheng Xie , Weiwen Kong , Yang Liu , Haiqiang Ma , Jianjun Tang

The intensity correlations due to imperfect modulation during the quantum-state preparation in a measurement-device-independent quantum key distribution (MDI QKD) system compromise its security performance. Therefore, it is crucial to…

Quantum Physics · Physics 2024-10-08 Junxuan Liu , Tianyi Xing , Ruiyin Liu , Zihao Chen , Hao Tan , Anqi Huang

It is known that measurement-device-independent quantum key distribution (MDI-QKD) provides ultimate security from all types of side-channel attack against detectors at the expense of low key generation rate. Here, we propose MDI-QKD using…

Quantum Physics · Physics 2017-03-08 Yonggi Jo , Wonmin Son

Quantum cryptographic conferencing (QCC) allows sharing secret keys among multiple distant users and plays a crucial role in quantum networks. Because of the fragility and low generation rate of genuine multipartite entangled states…

Quantum Physics · Physics 2025-02-04 Yifeng Du , Yufeng Liu , Chengdong Yang , Xiaodong Zheng , Shining Zhu , Xiao-song Ma

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.…

In this article we present a new prepare and measure quantum key distribution protocol that decouples the necessary quantum channel error estimation from its dependency on sifting, or otherwise post-selecting, the detection outcomes. Rather…

Quantum Physics · Physics 2017-02-27 James E. Troupe , Jacob M. Farinholt

Twin-Field quantum key distribution (TF-QKD) and its variants, e.g. Phase-Matching QKD, Sending-or-not-sending QKD, and No Phase Post-Selection TFQKD promise high key rates at long distance to beat the rate distance limit without a…

Improving the secret key rate is one of the vital issues in practical applications of quantum key distribution (QKD). In this paper, we propose an experimental scheme of high-dimensional measurement-device-independent quantum key…

Optics · Physics 2018-06-06 Wei Li , Shengmei Zhao

In this paper, we consider continuous-variable quantum key distribution (QKD) protocols which use non-Gaussian modulations. These specific modulation schemes are compatible with very efficient error correction procedures, hence allowing the…

Quantum Physics · Physics 2015-03-17 Anthony Leverrier , Philippe Grangier

In this paper, we propose a quantum key distribution (QKD) protocol based on only a two-dimensional Hilbert space encoding a quantum system and independent devices between the equipment for state preparation and measurement. Our protocol is…

Quantum Physics · Physics 2015-06-18 Hong-Wei Li , Zhen-Qiang Yin , Wei Chen , Shuang Wang , Guang-Can Guo , Zheng-Fu Han

The security of quantum key distribution (QKD) is severely threatened by discrepancies between realistic devices and theoretical assumptions. Recently, a significant framework called the reference technique was proposed to provide security…

Quantum Physics · Physics 2022-11-21 Jie Gu , Xiao-Yu Cao , Yao Fu , Zong-Wu He , Ze-Jie Yin , Hua-Lei Yin , Zeng-Bing Chen

Quantum secure direct communication (QSDC) is the technology to transmit secret information directly through a quantum channel without neither key nor ciphertext. It provides us with a secure communication structure that is fundamentally…

Quantum Physics · Physics 2018-05-21 Zeng-Rong Zhou , Yu-Bo Sheng , Peng-Hao Niu , Liu-Guo Yin , Gui-Lu Long

Quantum key distribution (QKD) has often been hailed as a reliable technology for secure communication in cyber-physical microgrids. Even though unauthorized key measurements are not possible in QKD, attempts to read them can disturb…

Cryptography and Security · Computer Science 2024-05-21 Suman Rath , Neel Kanth Kundu , Subham Sahoo

The discrete modulation can make up for the shortage of transmission distance in measurement-device-independent continuous-variable quantum key distribution (MDI-CVQKD) that has an unique advantage against all side-channel attacks but also…

Quantum Physics · Physics 2020-04-23 Wei Ye , Ying Guo , Yun Mao , Hai Zhong , Liyun Hu

Measurement-device-independent quantum key distribution (MDI-QKD) with decoy-state method is believed to be securely applied to defeat various hacking attacks in practical quantum key distribution systems. Recently, the coherent-state…

Quantum Physics · Physics 2014-09-22 Hua-Lei Yin , Wen-Fei Cao , Yao Fu , Yan-Lin Tang , Yang Liu , Teng-Yun Chen , Zeng-Bing Chen

Quantum key distribution (QKD offers a long-term solution to establish information-theoretically secure keys between two distant users. In practice, with a careful characterization of quantum sources and the decoy-state method,…

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