Reference-Frame-Independent and Measurement-Device-Independent Quantum Key Distribution Using One Single Source

Qian, Li Ping; Zhu, Changhua; Ma, Shuquan; Wei, Kejin; Pei, Changxing

doi:10.1007/s10773-018-3743-1

Cited by 9 publications

(3 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The same parameters were chosen for the states prepared in the Z basis, which correspond to the 16 dB [tan 2 ( 0. 35 2 ) = 10 −16/10 ], 20 dB [tan 2 ( 0.20 2 ) = 10 −20/10 ], and 26 dB [tan 2 ( 0.10 2 ) = 10 −16/10 ] extinction ratios of the practical optical attenuator, or the intensity modulator in a system with time-bin encoding. For comparison, a plot of the curve when δ = 0 is shown, which is analogous to the perfect encoding scenario.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Laing et al, (2010) introduced a reference-frame independent (RFI) QKD protocol to solve this alignment problem [30]. Subsequently, several variants of their protocol have been proposed, both theoretically [31][32][33][34][35][36][37] and experimentally [38][39][40], to advance the merits of RFI QKD. Furthermore, security proofs of existing QCC protocols assume perfect state preparation.…”

Section: Review Of the Literature On Qcc Protocolsmentioning

confidence: 99%

See 1 more Smart Citation

Tripartite Quantum Key Distribution Implemented with Imperfect Sources

Sekga

Mafu

2022

Optics

View full text Add to dashboard Cite

Multipartite quantum key distribution (QKD) is a promising area of quantum networks that provides unconditional secret keys among multiple parties, enabling only legitimate users to decrypt the encrypted message. However, security proofs of existing multipartite QKD typically assume perfect state preparation devices of legitimate users and neglect the relative rotation of reference frames. These presumptions are, nevertheless, very difficult to meet in practice, and thus the security of current multipartite QKD implementations is not guaranteed. By combining the idea of a loss tolerant technique, introduced by Tamaki et al. (K. Tamaki et al., Phys. Rev. A, 90, 052314, 2014), and the concept of a reference frame-independent protocol, we propose a three-party QKD protocol that considers state preparation flaws and the slow drift of reference frames. Through a numerical simulation, the influence of misaliged reference frames on the protocol’s stability was examined by drifting reference frames through angles β=π/5, β=π/6 and β=π/7. In addition, the performance of the proposed protocol was examined for the encoding flaws set at δ=0.35, δ=0.20, and δ=0.10. The results show that the protocol is robust against state preparation flaws, and is insignificantly impacted by misalignment of the reference frames because the achieved transmission distances and secret key rates are comparable to the perfect scenarios. This work dramatically contributes toward the realization of practical and secure multipartite QKD. The proposed protocol has direct applications in quantum communication network environments that involve unknown and slowly varying reference frames, web conferences, and online communications.

show abstract

Section: Simulation Resultsmentioning

confidence: 99%

Section: Review Of the Literature On Qcc Protocolsmentioning

confidence: 99%

Tripartite Quantum Key Distribution Implemented with Imperfect Sources

Sekga

Mafu

2022

Optics

View full text Add to dashboard Cite

show abstract

“…[21][22][23] Fortunately, the reference frame independent (RFI) protocol was proposed by Laing et al [19] to address this problem of alignment. Since inception of the RFI protocol, outstanding results have been achieved both theoretically [24][25][26][27][28][29][30] and experimentally, [20,[31][32][33] thus demonstrating its capability to achieve higher secure key rate under a varying reference frame.…”

Section: Introductionmentioning

confidence: 99%

Three-party reference frame independent quantum key distribution protocol*

Sekga¹,

Mafu²

2021

Chinese Phys. B

View full text Add to dashboard Cite

We present a three-party reference frame independent quantum key distribution protocol which can be implemented without any alignment of reference frames between the sender and the receiver. The protocol exploits entangled states to establish a secret key among three communicating parties. We derive the asymptotic key rate for the proposed protocol against collective attacks and perform a finite-size key security analysis against general attacks in the presence of statistical fluctuations. We investigate the impact of reference frame misalignment on the stability of our protocol, and we obtain a transmission distance of 180 km, 200 km, and 230 km for rotation of reference frames β = π/6, β = π/8 and β = 0, respectively. Remarkably, our results demonstrate that our proposed protocol is not heavily affected by an increase in misalignment of reference frames as the achievable transmission distances are still comparable to the case where there is no misalignment in reference frames (when β = 0). We also simulate the performance of our protocol for a fixed number of signals. Our results demonstrate that the protocol can achieve an effective key generation rate over a transmission distance of about 120 km with realistic 107 finite data signals and approximately achieve 195 km with 109 signals. Moreover, our proposed protocol is robust against noise in the quantum channel and achieves a threshold error rate of 22.7%.

show abstract

The Decoy-State Measurement-Device-Independent Quantum Key Distribution with Heralded Single-Photon Source

2020

Int J Theor Phys

View full text Add to dashboard Cite

Reference-Frame-Independent and Measurement-Device-Independent Quantum Key Distribution Using One Single Source

Cited by 9 publications

References 50 publications

Tripartite Quantum Key Distribution Implemented with Imperfect Sources

Tripartite Quantum Key Distribution Implemented with Imperfect Sources

Three-party reference frame independent quantum key distribution protocol*

The Decoy-State Measurement-Device-Independent Quantum Key Distribution with Heralded Single-Photon Source

Contact Info

Product

Resources

About