Parametric down-conversion with local operation and two-way classical communication

doi:10.1088/1674-1056/20/4/040303

中国物理B ›› 2011, Vol. 20 ›› Issue (4): 40303-040303.doi: 10.1088/1674-1056/20/4/040303

Parametric down-conversion with local operation and two-way classical communication

刘强, 谭勇刚

Physics and Information Engineering Department, Luoyang Normal College, Luoyang 471022, China

收稿日期:2010-10-01 修回日期:2010-11-09 出版日期:2011-04-15 发布日期:2011-04-15
基金资助:
Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 10905028/A050104), the Natural Science Foundation of Henan Province, China (Grant No. 092300410188), the Science Foundation of Hennan Provincial Education Department (Grant No. 2010A140010) and Youth Fund of Luoyang Normal College.

Parametric down-conversion with local operation and two-way classical communication

Liu Qiang(刘强)^† and Tan Yong-Gang(谭勇刚)^‡

Physics and Information Engineering Department, Luoyang Normal College, Luoyang 471022, China

Received:2010-10-01 Revised:2010-11-09 Online:2011-04-15 Published:2011-04-15
Supported by:
Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 10905028/A050104), the Natural Science Foundation of Henan Province, China (Grant No. 092300410188), the Science Foundation of Hennan Provincial Education Department (Grant No. 2010A140010) and Youth Fund of Luoyang Normal College.

摘要/Abstract

摘要： The decoy-state quantum key distribution protocol suggested by Adachi et al. (Phys. Rev. Lett. 99 180503 (2007)) is proven to be secure and feasible with current techniques. It owns two attractive merits, i.e., its longer secure transmission distance and more convenient operation design. In this paper, we first improve the protocol with the aid of local operation and two-way classical communication (2-LOCC). After our modifications, the secure transmission distance is increased by about 20 km, which will make the protocol more practicable.

Abstract: The decoy-state quantum key distribution protocol suggested by Adachi et al. (Phys. Rev. Lett. 99 180503 (2007)) is proven to be secure and feasible with current techniques. It owns two attractive merits, i.e., its longer secure transmission distance and more convenient operation design. In this paper, we first improve the protocol with the aid of local operation and two-way classical communication (2-LOCC). After our modifications, the secure transmission distance is increased by about 20 km, which will make the protocol more practicable.

Key words: parametric down-conversion, local operation and two-way classical communication, B step

中图分类号: (Quantum mechanics)

03.65.-w

03.67.-a (Quantum information)

刘强, 谭勇刚. Parametric down-conversion with local operation and two-way classical communication[J]. 中国物理B, 2011, 20(4): 40303-040303.

Liu Qiang(刘强) and Tan Yong-Gang(谭勇刚) . Parametric down-conversion with local operation and two-way classical communication[J]. Chin. Phys. B, 2011, 20(4): 40303-040303.

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Parametric down-conversion with local operation and two-way classical communication

Parametric down-conversion with local operation and two-way classical communication

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