Real-time selection for free-space measurement device independent quantum key distribution

Zhu, Zhuodan; Chen, Dong; Zhao, Shanghong; Zhang, Qinhui; Xi, Junhua

doi:10.1007/s11128-018-2146-9

Cited by 10 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since we only concentrate on the high-loss region, the geometric loss is ranged from 25 dB~55 dB for convenience. Here, we first compare the key generation rate and QBER using the correlated Log-normal distribution (Correlated-LD) to those using the Log-normal distribution (LD) presented in [24], which are both applicable to the weak turbulence channel. Below for simplicity, we fixed the reflection effect in Equation ( 6) at 1, which corresponds to the perfect alignment between Alice and Bob.…”

Section: Resultsmentioning

confidence: 99%

“…Due to the assumption of uncorrelated fading the forward and backward passes is not appropriate in the MRR-MDI-QKD configuration, we considered that the double-pass channel can be modeled by the distribution of the weighted product of two correlated Log-normal random variables. Based on the correlated Log-normal distribution with a correlation coefficient ρ I , the probability distribution for the total turbulent-induced fluctuating transmission coefficient [24] is given as:…”

Section: The Framework For the Key Rate Estimation Of Mrr-mdi-qkd In A Turbulent Channelmentioning

confidence: 99%

See 1 more Smart Citation

Free Space Measurement Device Independent Quantum Key Distribution with Modulating Retro-Reflectors under Correlated Turbulent Channel

Wang

Liu

et al. 2021

Entropy

Self Cite

View full text Add to dashboard Cite

Modulating retro-reflector (MRR), originally introduced to support laser communication, relieves most of the weight, power, and pointing requirements to the ground station. In this paper, a plug-and-play measurement device independent quantum key distribution (MDI-QKD) scheme with MRR is proposed not only to eliminate detector side channels and allow an untrusted satellite relay between two users, but also to simplify the requirements set-ups in practical flexible moving scenarios. The plug-and-play architecture compensates for the polarization drift during the transmission to provide superior performance in implementing the MDI-QKD on a free-space channel, and the MRR device is adopted to relax the requirements on both communication terminals. A double-pass correlated turbulent channel model is presented to investigate the complex and unstable channel characteristics caused by the atmospheric turbulence. Furthermore, the security of the modified MDI-QKD scheme is analyzed under some classical attacks and the simulation results indicate the feasibility under the situation that the system performance deteriorates with the increase of fading correlation coefficient and the turbulence intensity, which provides a meaningful step towards an MDI-QKD based on the moving platforms to join a dynamic quantum network with untrusted relays.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: The Framework For the Key Rate Estimation Of Mrr-mdi-qkd In A Turbulent Channelmentioning

confidence: 99%

Free Space Measurement Device Independent Quantum Key Distribution with Modulating Retro-Reflectors under Correlated Turbulent Channel

Wang

Liu

et al. 2021

Entropy

Self Cite

View full text Add to dashboard Cite

show abstract

“…At present, the polarization-encoded photons from a weak coherent pulse (WCP) source have been experimentally demonstrated to be more suitable than the phase-encoding scheme in free-space QKD [ 10 ]. However, in some previous theoretical studies [ 11 , 12 , 13 ], the fluctuation properties of quantum polarization through a turbulent atmosphere have been ignored when estimating the performance of polarization-encoding QKD, where the misalignment error is only assumed as a constant result (i.e., 1.5%) from the experiment [ 9 ], which is not theoretically rigorous.…”

Section: Introductionmentioning

confidence: 99%

Influence of Source Parameters on the Polarization Properties of Beams for Practical Free-Space Quantum Key Distribution

Qing

Lin

et al. 2021

Entropy

Self Cite

View full text Add to dashboard Cite

Polarization encoding has been extensively used in quantum key distribution (QKD) implementations along free-space links. However, the calculation model to characterize channel transmittance and quantum bit error rate (QBER) for free-space QKD has not been systematically studied. As a result, it is often assumed that misalignment error is equal to a fixed value, which is not theoretically rigorous. In this paper, we investigate the depolarization and rotation of the signal beams resulting from spatially-dependent polarization effects of the use of curved optics in an off-axis configuration, where decoherence can be characterized by the Huygens–Fresnel principle and the cross-spectral density matrix (CSDM). The transmittance and misalignment error in a practical free-space QKD can thus be estimated using the method. Furthermore, the numerical simulations clearly show that the polarization effect caused by turbulence can be effectively mitigated when maintaining good beam coherence properties.

show abstract

Building Semantic Dependency Knowledge Graph Based on HowNet

Zhu

Shao

et al. 2020

Lecture Notes in Computer Science

View full text Add to dashboard Cite

Real-time selection for free-space measurement device independent quantum key distribution

Cited by 10 publications

References 19 publications

Free Space Measurement Device Independent Quantum Key Distribution with Modulating Retro-Reflectors under Correlated Turbulent Channel

Free Space Measurement Device Independent Quantum Key Distribution with Modulating Retro-Reflectors under Correlated Turbulent Channel

Influence of Source Parameters on the Polarization Properties of Beams for Practical Free-Space Quantum Key Distribution

Building Semantic Dependency Knowledge Graph Based on HowNet

Contact Info

Product

Resources

About