Theoretical study of quantum bit rate in free-space quantum cryptography

Jing Ma; Guang Yu Zhang; Li Ying Tan

doi:10.1088/0256-307X/23/6/007

Theoretical study of quantum bit rate in free-space quantum cryptography

Jing Ma^*
, Guang Yu Zhang
, Li Ying Tan

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology
Harbin University of Science and Technology

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The quantum bit rate is an important operating parameter in free-space quantum key distribution. We introduce the measuring factor and the sifting factor, and present the expressions of the quantum bit rate based on the ideal single-photon sources and the single-photon sources with Poisson distribution. The quantum bit rate is studied in the numerical simulation for the laser links between a ground station and a satellite in a low earth orbit. The results show that it is feasible to implement quantum key distribution between a ground station and a satellite in a low earth orbit.

Original language	English
Article number	007
Pages (from-to)	1379-1382
Number of pages	4
Journal	Chinese Physics Letters
Volume	23
Issue number	6
DOIs	https://doi.org/10.1088/0256-307X/23/6/007
State	Published - 1 Jun 2006

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abstract = "The quantum bit rate is an important operating parameter in free-space quantum key distribution. We introduce the measuring factor and the sifting factor, and present the expressions of the quantum bit rate based on the ideal single-photon sources and the single-photon sources with Poisson distribution. The quantum bit rate is studied in the numerical simulation for the laser links between a ground station and a satellite in a low earth orbit. The results show that it is feasible to implement quantum key distribution between a ground station and a satellite in a low earth orbit.",

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AB - The quantum bit rate is an important operating parameter in free-space quantum key distribution. We introduce the measuring factor and the sifting factor, and present the expressions of the quantum bit rate based on the ideal single-photon sources and the single-photon sources with Poisson distribution. The quantum bit rate is studied in the numerical simulation for the laser links between a ground station and a satellite in a low earth orbit. The results show that it is feasible to implement quantum key distribution between a ground station and a satellite in a low earth orbit.

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Theoretical study of quantum bit rate in free-space quantum cryptography

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