Detector-decoy high-dimensional quantum key distribution

Bao, Hai-Ze; Bao, Wan-Su; Wang, Yang; Chen, Ruike; Zhou, Chun; Jiang, Mu-Sheng; Li, Hongwei

doi:10.1364/oe.24.022159

Cited by 9 publications

(5 citation statements)

References 43 publications

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“…HD-QKD provides a promising and efficient platform for overcoming some of the practical issues faced by present QKD systems [25]- [30]. The efficiency is mainly due to its capacity of encoding multiple bits of information, log 2 (d) for d-dimensional systems, on a single photon [31], as well as its being more resilient to noise [7]. The same degrees of freedom used in qubit-based QKD systems can be employed in a high-dimensional quantum state space.…”

Section: Introductionmentioning

confidence: 99%

High-Dimensional Quantum Key Distribution in Quantum Access Networks

Elmabrok,

Razavi,

Eltaif

et al. 2024

IEEE Photonics J.

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We investigate the use of high-dimensional quantum key distribution (HD-QKD) for wireless access to hybrid quantum-classical networks. We use d-dimensional time-phase encoded states to exchange a secret key between an indoor wireless user and the central office on the other end of the access network. We evaluate the performance in the case of transmitting quantum and classical signals over the same passive optical network by accounting for the impact of background noise induced by the Raman-scattered light on the QKD receiver. We also take into account the loss and background noise that occur in indoor environments as well as finite key effects in our analysis. By studying the system under nominal simulation conditions, we identify regimes of operation in which an HD-QKD system with d = 4 can outperform its qubit-based counterpart.

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Section: Introductionmentioning

confidence: 99%

High-Dimensional Quantum Key Distribution in Quantum Access Networks

Elmabrok,

Razavi,

Eltaif

et al. 2024

IEEE Photonics J.

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“…In general, there are two methods to increase single photon's capacity. The first one is the high-dimension (HD) encoding in one degree of freedom (DOF) [47][48][49][50][51][52][53][54][55][56][57][58][59]. In 2016, the group of Chau proposed the first qudit-based MDI-QKD protocol using linear optics [53].…”

Section: Introductionmentioning

confidence: 99%

Measurement-device-independent quantum key distribution of multiple degrees of freedom of a single photon

Yan,

Zhou,

Zhong

et al. 2020

Preprint

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Measurement-device-independent quantum key distribution (MDI-QKD) provides us a powerful approach to resist all attacks at detection side. Besides the unconditional security, people also seek for high key generation rate, but MDI-QKD has relatively low key generation rate. In this paper, we provide an efficient approach to increase the key generation rate of MDI-QKD by adopting multiple degrees of freedom (DOFs) of single photons to generate keys. Compared with other highdimension MDI-QKD protocols encoding in one DOF, our protocol is more flexible, for our protocol generating keys in independent subsystems and the detection failure or error in a DOF not affecting the information encoding in other DOFs. Based on above features, our MDI-QKD protocol may have potential application in future quantum communication field.

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“…In the finite-key scenario, security analyses of the decoy-state HD-QKD have been accomplished for collective attacks [16] and coherent attacks [17]. Besides, some modified HD-QKD protocols [18,19] were proposed. Moreover, significant efforts have been made in experiment implementations over the past decade [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Finite-key analysis for high-dimensional quantum key distribution with intensity fluctuations

Gan

Wang

Bao³

et al. 2018

J. Phys. B: At. Mol. Opt. Phys.

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High-dimensional quantum key distribution (HD-QKD) can increase photon information efficiency and be robust to noise. Several HD-QKD experiments have been demonstrated to verify the above appealing features. However, device imperfections, which have great impacts on the security of HD-QKD system, have not been widely discussed. In this paper, we mainly investigate the finite-key analysis against coherent attacks for HD-QKD without and with intensity fluctuations. For the case without intensity fluctuations, we present the parameter estimation based on the Chernoff bound and the improved Chernoff bound. When considering the case with intensity fluctuations, we present the finite-key analysis based on Azuma's inequality. By numerical simulations, we find that the performance of HD-QKD for the finitekey scenario based on the improved Chernoff bound is tighter than those based on the Chernoff bound or Hoeffding's inequality in terms of the secret-key rate and the maximum transmission distance. Moreover, we find that intensity fluctuations affect the performance of HD-QKD greatly and the effect for short running time of transmission is more obvious.

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Detector-decoy high-dimensional quantum key distribution

Cited by 9 publications

References 43 publications

High-Dimensional Quantum Key Distribution in Quantum Access Networks

High-Dimensional Quantum Key Distribution in Quantum Access Networks

Measurement-device-independent quantum key distribution of multiple degrees of freedom of a single photon

Finite-key analysis for high-dimensional quantum key distribution with intensity fluctuations

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