Experimental Mode-Pairing Measurement-Device-Independent Quantum Key Distribution without Global Phase Locking

Zhu, Hao-Tao; Huang, Yizhi; Liu, Hui; Zeng, Pei; Zou, Mi; Dai, Yunqi; Tang, Shi-Biao; Li, Hao; You, Lixing; Wang, Zhen; Chen, Yu-Ao; Ma, Xiongfeng; Chen, Teng-Yun; Pan, Jian-Wei

doi:10.1103/physrevlett.130.030801

Cited by 44 publications

(15 citation statements)

References 31 publications

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“…Measurement-device-independent QKD (MDI-QKD) [38,39] stands as a significant accomplishment, eradicating all potential loopholes on the detection side. Demonstrations have confirmed the practicality of MDI-QKD [40][41][42][43][44][45][46], and the various variants [47][48][49][50] has greatly promoted the development of QKD.…”

Section: Introductionmentioning

confidence: 87%

Boosting asymmetric measurement-device-independent quantum key distribution via numerical-analysis technology

Li,

Zheng,

Zhang

et al. 2024

Phys. Scr.

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Asymmetric measurement-device-independent quantum key distribution (MDI-QKD) enables building a scalable, high-rate quantum network with an untrusted relay in real-world scenarios. In this study, we improve the performance of asymmetric MDI-QKD using numerical analysis techniques. Simulation results show a twofold increase in tolerance to basis misalignment compared to the previous state-of-the-art method. Specifically, for instances of substantial basis misalignment, the key rate increases by an order of magnitude, and the maximum communication distance extends by 20 km. Our work significantly enhances the robustness and feasibility of asymmetric MDI-QKD, thereby promoting the widespread deployment of MDI-QKD networks.

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Section: Introductionmentioning

confidence: 87%

Boosting asymmetric measurement-device-independent quantum key distribution via numerical-analysis technology

Li,

Zheng,

Zhang

et al. 2024

Phys. Scr.

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“…[52] Researchers from the University of Science and 124207-3 Technology of China demonstrated intercity mode-pairing MDI-QKD without global phase-locking. [53] In 2018, Lucamarini et al proposed a two-field quantum key distribution protocol that breaks the PLOB bound, twinfield quantum key distribution, TF-QKD. [22] TF-QKD protocol has the same security level as MDI-QKD protocol, with measurement-device-independent security.…”

Section: Qkd Protocols 21 Development Processmentioning

confidence: 99%

Research progress in quantum key distribution

Zhang 张,

Wu 吴,

Cui 崔

et al. 2023

Chinese Phys. B

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uantum Key Distribution (QKD) is a sophisticated method for securing information by leveraging the principles of quantum mechanics. Its objective is to establish a confidential key between authorized partners who are connected via both a quantum channel and a classical authentication channel. This paper presents a comprehensive overview of QKD protocols, chip-based QKD systems, quantum light sources, quantum detectors, fiber-based QKD networks, space-based QKD systems, as well as the applications and future prospects of QKD technology.

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“…Based on quantum mechanics, QKD could provide information-theoretic approach against an eavesdropper during key distribution tasks [1][2][3]. Currently, along with the breakthrough of fiber-based [4][5][6] and satellite-based [7,8] quantum communication, building and operating a high-efficient and flexible quantum internet has become a grand vision attracting global attention [9,10]. However, most of these achievements are based on encoding information with two-dimensional quantum systems such as polarization and phase of photons.…”

Section: Introductionmentioning

confidence: 99%

State-dependent misalignment and turbulence effects on high-dimensional quantum key distribution with orbital angular momentum

Li,

Wang,

et al. 2024

New J. Phys.

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High-dimensional quantum key distribution (HD-QKD) is a topic of growing interest in the quantum communication community, not only for its inherent properties but also for its possible applications. As the typical freedom in HD-QKD, orbital angular momentum (OAM) has made significant advancements in experiments recently. However, in the airborne scenario, different states suffer different amounts of misalignment and turbulence. A complete theoretical analysis model for the transmission characteristics of OAM in atmospheric channels is lacking. In this paper, we systematically analyze the extent to which degeneration including channel power loss and mode crosstalk are influenced by misalignment and turbulence effects. Furthermore, the performance of OAM-encoded HD-QKD system in different dimensions is evaluated while incorporating finite-key effects. We demonstrate that the performance of OAM-encoded HD-QKD will be better at short range, which provide a reference to implement QKD based on task requirements. Since OAM is desired to increase the capacity of QKD system and experiments have already been carried out, our work can not only bridge the gap between theory and practice, but also optimize experimental parameters and improve system performance.

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Experimental Mode-Pairing Measurement-Device-Independent Quantum Key Distribution without Global Phase Locking

Cited by 44 publications

References 31 publications

Boosting asymmetric measurement-device-independent quantum key distribution via numerical-analysis technology

Boosting asymmetric measurement-device-independent quantum key distribution via numerical-analysis technology

Research progress in quantum key distribution

State-dependent misalignment and turbulence effects on high-dimensional quantum key distribution with orbital angular momentum

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