Bidirectional multi-qubit quantum teleportation in noisy channel aided with weak measurement

doi:10.1088/1674-1056/26/4/040305

中国物理B ›› 2017, Vol. 26 ›› Issue (4): 40305-040305.doi: 10.1088/1674-1056/26/4/040305

Bidirectional multi-qubit quantum teleportation in noisy channel aided with weak measurement

Guang Yang(杨光), Bao-Wang Lian(廉保旺), Min Nie(聂敏), Jiao Jin(金娇)

Department of Communication Engineering, School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, China

收稿日期:2016-11-07 修回日期:2016-12-23 出版日期:2017-04-05 发布日期:2017-04-05
通讯作者: Guang Yang E-mail:sharon.yg@163.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61172071), the Scientific Research Program Funded by Shaanxi Provincial Education Department, China (Grant No. 16JK1711), the International Scientific Cooperation Program of Shaanxi Province, China (Grant No. 2015KW-013), and the Natural Science Foundation Research Project of Shaanxi Province, China (Grant No. 2016JQ6033).

Bidirectional multi-qubit quantum teleportation in noisy channel aided with weak measurement

Guang Yang(杨光), Bao-Wang Lian(廉保旺), Min Nie(聂敏), Jiao Jin(金娇)

Department of Communication Engineering, School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, China

Received:2016-11-07 Revised:2016-12-23 Online:2017-04-05 Published:2017-04-05
Contact: Guang Yang E-mail:sharon.yg@163.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61172071), the Scientific Research Program Funded by Shaanxi Provincial Education Department, China (Grant No. 16JK1711), the International Scientific Cooperation Program of Shaanxi Province, China (Grant No. 2015KW-013), and the Natural Science Foundation Research Project of Shaanxi Province, China (Grant No. 2016JQ6033).

摘要/Abstract

摘要： Recently, bidirectional quantum teleportation has attracted a great deal of research attention. However, existing bidirectional teleportation schemes are normally discussed on the basis of perfect quantum environments. In this paper, we first put forward a bidirectional teleportation scheme to transport three-qubit Greenberger-Horne-Zeilinger (GHZ) states based on controled-not (CNOT) operation and single-qubit measurement. Then, we generalize it to the teleportation of multi-qubit GHZ states. Further, we discuss the influence of quantum noise on our scheme by the example of an amplitude damping channel, then we obtain the fidelity of the teleportation. Finally, we utilize the weak measurement and the corresponding reversing measurement to protect the quantum entanglement, which shows an effective enhancement of the teleportation fidelity.

关键词: quantum teleportation, quantum decoherence, amplitude damping, weak measurement

Abstract: Recently, bidirectional quantum teleportation has attracted a great deal of research attention. However, existing bidirectional teleportation schemes are normally discussed on the basis of perfect quantum environments. In this paper, we first put forward a bidirectional teleportation scheme to transport three-qubit Greenberger-Horne-Zeilinger (GHZ) states based on controled-not (CNOT) operation and single-qubit measurement. Then, we generalize it to the teleportation of multi-qubit GHZ states. Further, we discuss the influence of quantum noise on our scheme by the example of an amplitude damping channel, then we obtain the fidelity of the teleportation. Finally, we utilize the weak measurement and the corresponding reversing measurement to protect the quantum entanglement, which shows an effective enhancement of the teleportation fidelity.

Key words: quantum teleportation, quantum decoherence, amplitude damping, weak measurement

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

03.67.Pp

03.65.Yz (Decoherence; open systems; quantum statistical methods) 03.67.Hk (Quantum communication)

杨光, 廉保旺, 聂敏, 金娇. Bidirectional multi-qubit quantum teleportation in noisy channel aided with weak measurement[J]. 中国物理B, 2017, 26(4): 40305-040305.

Guang Yang(杨光), Bao-Wang Lian(廉保旺), Min Nie(聂敏), Jiao Jin(金娇). Bidirectional multi-qubit quantum teleportation in noisy channel aided with weak measurement[J]. Chin. Phys. B, 2017, 26(4): 40305-040305.

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Bidirectional multi-qubit quantum teleportation in noisy channel aided with weak measurement

Bidirectional multi-qubit quantum teleportation in noisy channel aided with weak measurement

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