Detector-decoy quantum key distribution without monitoring signal disturbance

Yin, Hua-Lei; Fu, Y.; Mao, Yingqiu; Chen, Zeng-Bing

doi:10.1103/physreva.93.022330

Cited by 23 publications

(18 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where , is the channel transmittance, and D is the distance of optical fibre. For the RRDPS protocol, the Y n and can be given by 61 62 63 …”

Section: Methodsmentioning

confidence: 99%

“…Finally, we perform a numerical simulation to study the performance of six-state SARG04 with weak coherent states in an infinite decoy states setting. Also, we compare the performance of six-state SARG04 and other prepare-and-measure QKD protocols, i.e., BB84 1 43 , four-state SARG04 48 52 , and round-robin differential phase-shift (RRDPS) QKD protocols 61 62 63 in the same situation.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Security of quantum key distribution with multiphoton components

Yin

Mao

et al. 2016

Sci Rep

Self Cite

View full text Add to dashboard Cite

Most qubit-based quantum key distribution (QKD) protocols extract the secure key merely from single-photon component of the attenuated lasers. However, with the Scarani-Acin-Ribordy-Gisin 2004 (SARG04) QKD protocol, the unconditionally secure key can be extracted from the two-photon component by modifying the classical post-processing procedure in the BB84 protocol. Employing the merits of SARG04 QKD protocol and six-state preparation, one can extract secure key from the components of single photon up to four photons. In this paper, we provide the exact relations between the secure key rate and the bit error rate in a six-state SARG04 protocol with single-photon, two-photon, three-photon, and four-photon sources. By restricting the mutual information between the phase error and bit error, we obtain a higher secure bit error rate threshold of the multiphoton components than previous works. Besides, we compare the performances of the six-state SARG04 with other prepare-and-measure QKD protocols using decoy states.

show abstract

“…where , is the channel transmittance, and D is the distance of optical fibre. For the RRDPS protocol, the Y n and can be given by 61 62 63 …”

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Security of quantum key distribution with multiphoton components

Yin

Mao

et al. 2016

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here, we assume that the interference measurement and location measurement can discriminate the detection signal exactly coming from a single photon. It is the similar assumption in the round-robin differential phase-shift quantum key distribution [7] and can be solved by using the detector-decoy method [8]. Charlie announces a successful detection when one and only one photon is clicked both in Fig.…”

Section: Security Analysismentioning

confidence: 99%

“…Quantum internet holds numerous advantages over the classical internet in distributing, sharing and processing information [1,2]. Quantum internet consists of quantum networks for quantum computing and quantum communication, with quantum computing offering high calculation speeds [3,4] and quantum communication providing robust security [5][6][7][8]. In the realm of quantum communication, besides quantum key distribution which has been well developed on the way to practical applications recently [9][10][11][12][13][14], quantum secret sharing (QSS) is another cryptographic primitive used for multiparty quantum communication in quantum internet.…”

Section: Introductionmentioning

confidence: 99%

Secure Quantum Secret Sharing without Signal Disturbance Monitoring

Yin,

Gu,

Xie

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

Quantum secret sharing (QSS) is an essential primitive for the future quantum internet, which promises secure multiparty communication. However, developing a large-scale QSS network is a huge challenge due to the channel loss and the requirement of multiphoton interference or highfidelity multipartite entanglement distribution. Here, we propose a three-user QSS protocol without monitoring signal disturbance, which is capable of ensuring the unconditional security. The final key rate of our protocol can be demonstrated to break the Pirandola-Laurenza-Ottaviani-Banchi bound of quantum channel and its simulated transmission distance can approach over 600 km using current techniques. Our results pave the way to realizing high-rate and large-scale QSS networks.

show abstract

“…Recently, many proof-of-principle experimental demonstrations of the RRDPS protocols have been presented [10,11,12,13]. There are also several theoretical follow-ups that considered source flaws in the RRDPS protocol [14] and its extensions to other QKD scenarios [15,16].…”

Section: Introductionmentioning

confidence: 99%

Practical round-robin differential phase-shift quantum key distribution

et al. 2016

View full text Add to dashboard Cite

Abstract. The security of quantum key distribution (QKD) relies on the Heisenberg uncertainty principle, with which legitimate users are able to estimate information leakage by monitoring the disturbance of the transmitted quantum signals. Normally, the disturbance is reflected as bit flip errors in the sifted key; thus, privacy amplification, which removes any leaked information from the key, generally depends on the bit error rate. Recently, a round-robin differential-phase-shift QKD protocol for which privacy amplification does not rely on the bit error rate [Nature 509, 475 (2014)] was proposed. The amount of leaked information can be bounded by the sender during the state-preparation stage and hence, is independent of the behaviour of the unreliable quantum channel. In our work, we apply the tagging technique to the protocol and present a tight bound on the key rate and employ a decoy-state method. The effects of background noise and misalignment are taken into account under practical conditions. Our simulation results show that the protocol can tolerate channel error rates close to 50% within a typical experiment setting. That is, there is a negligible restriction on the error rate in practice.Practical round-robin differential-phase-shift quantum key distribution 2

show abstract

Detector-decoy quantum key distribution without monitoring signal disturbance

Cited by 23 publications

References 32 publications

Security of quantum key distribution with multiphoton components

Security of quantum key distribution with multiphoton components

Secure Quantum Secret Sharing without Signal Disturbance Monitoring

Practical round-robin differential phase-shift quantum key distribution

Contact Info

Product

Resources

About