Measurement-device-independent quantum key distribution protocols against collective noise

Modern Physics Letters B ◽

10.1142/s0217984921501955 ◽

2021 ◽

pp. 2150195

Author(s):

Yefeng He ◽

Wenping Ma

Keyword(s):

Coherent State ◽

Quantum Key Distribution ◽

Single Photon ◽

Bell State ◽

Key Distribution ◽

Quantum States ◽

Channel Noise ◽

Light Sources ◽

Measurement Device ◽

Measurement Device Independent

In order to eliminate the influence of the channel noise, two new measurement-device-independent quantum key distribution (MDI-QKD) protocols are proposed with logical quantum states. They can resist collective-dephasing noise and collective-rotation noise, respectively. This paper produces logical quantum states by adding the auxiliary light sources, the CNOT operations and the Hadamard transforms in the system model. The main light sources and auxiliary light sources are flexible and easily implemented, since they can be weak coherent state (WCS) sources, heralded single-photon sources (HSPSs) or heralded pair coherent state (HPCS) sources. To generate one key bit, the new MDI-QKD protocols only need one logical qubit with two particles so that they have high qubit efficiency. Moreover, the new protocols also use partial Bell-state measurement (BSM) which is very easily implemented with existing technologies.

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Enhanced Bell state measurement for efficient measurement-device-independent quantum key distribution using 3-dimensional quantum states

Scientific Reports ◽

10.1038/s41598-018-36513-x ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 2

Author(s):

Yonggi Jo ◽

Kwangil Bae ◽

Wonmin Son

Keyword(s):

Quantum Key Distribution ◽

Bell State ◽

Key Distribution ◽

Quantum States ◽

Measurement Device ◽

Bell State Measurement ◽

3 Dimensional ◽

State Measurement ◽

Efficient Measurement ◽

Measurement Device Independent

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Improving Underwater Continuous-Variable Measurement-Device-Independent Quantum Key Distribution via Zero-Photon Catalysis

Entropy ◽

10.3390/e22050571 ◽

2020 ◽

Vol 22 (5) ◽

pp. 571

Author(s):

Yuang Wang ◽

Shanhua Zou ◽

Yun Mao ◽

Ying Guo

Keyword(s):

Quantum Key Distribution ◽

Single Photon ◽

Elevation Angle ◽

Key Distribution ◽

Continuous Variable ◽

Secret Key ◽

Underwater Communications ◽

Measurement Device ◽

Transmission Distance ◽

Measurement Device Independent

Underwater quantumkey distribution (QKD) is tough but important formodern underwater communications in an insecure environment. It can guarantee secure underwater communication between submarines and enhance safety for critical network nodes. To enhance the performance of continuous-variable quantumkey distribution (CVQKD) underwater in terms ofmaximal transmission distance and secret key rate as well, we adopt measurement-device-independent (MDI) quantum key distribution with the zero-photon catalysis (ZPC) performed at the emitter of one side, which is the ZPC-based MDI-CVQKD. Numerical simulation shows that the ZPC-involved scheme, which is a Gaussian operation in essence, works better than the single photon subtraction (SPS)-involved scheme in the extreme asymmetric case. We find that the transmission of the ZPC-involved scheme is longer than that of the SPS-involved scheme. In addition, we consider the effects of temperature, salinity and solar elevation angle on the system performance in pure seawater. The maximal transmission distance decreases with the increase of temperature and the decrease of sunlight elevation angle, while it changes little over a broad range of salinity

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