Entanglement fidelity of channel adaptive quantum codes

doi:10.1088/1674-1056/22/1/010308

Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (1): 10308-010308.doi: 10.1088/1674-1056/22/1/010308

Entanglement fidelity of channel adaptive quantum codes

詹云, 陈小余

College of Information and Electronic Engineering, Zhejiang Gongshang University, Hangzhou 310018, China

收稿日期:2012-03-16 修回日期:2012-06-22 出版日期:2012-12-01 发布日期:2012-12-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 60972071), the Natural Science Foundation of Zhejiang Province, China (Grant Nos. Y6100421 and LQ12F02012), and the Zhejiang Province Science and Technology Project, China (Grant No. 2009C31060).

Entanglement fidelity of channel adaptive quantum codes

Zhan Yun (詹云), Chen Xiao-Yu (陈小余)

College of Information and Electronic Engineering, Zhejiang Gongshang University, Hangzhou 310018, China

Received:2012-03-16 Revised:2012-06-22 Online:2012-12-01 Published:2012-12-01
Contact: Chen Xiao-Yu E-mail:xychen@zjgsu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 60972071), the Natural Science Foundation of Zhejiang Province, China (Grant Nos. Y6100421 and LQ12F02012), and the Zhejiang Province Science and Technology Project, China (Grant No. 2009C31060).

摘要/Abstract

摘要： We study the performances of quantum channel adaptive [4,1] code transmitting in a joint amplitude damping and dephasing channel, the [6,2] code transmitting in an amplitude damping channel by combining the encoding, noise process, and decoding as one effective channel. We explicitly obtain the entanglement fidelities. The recovery operators of the [6,2] code are given. The performance is nearly optimal comparing with that of the optimal method of semidefinite programming.

关键词: adaptive quantum code, amplitude damping channel, fidelity

Abstract: We study the performances of quantum channel adaptive [4,1] code transmitting in a joint amplitude damping and dephasing channel, the [6,2] code transmitting in an amplitude damping channel by combining the encoding, noise process, and decoding as one effective channel. We explicitly obtain the entanglement fidelities. The recovery operators of the [6,2] code are given. The performance is nearly optimal comparing with that of the optimal method of semidefinite programming.

Key words: adaptive quantum code, amplitude damping channel, fidelity

中图分类号: (Quantum error correction and other methods for protection against decoherence)

03.67.Pp

詹云, 陈小余. Entanglement fidelity of channel adaptive quantum codes[J]. Chin. Phys. B, 2013, 22(1): 10308-010308.

Zhan Yun (詹云), Chen Xiao-Yu (陈小余). Entanglement fidelity of channel adaptive quantum codes[J]. Chin. Phys. B, 2013, 22(1): 10308-010308.

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Entanglement fidelity of channel adaptive quantum codes

Entanglement fidelity of channel adaptive quantum codes

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