中国物理B ›› 2019, Vol. 28 ›› Issue (1): 10302-010302.doi: 10.1088/1674-1056/28/1/010302

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Noiseless linear amplification for the single-photon entanglement of arbitrary polarization-time-bin qudit

Ling-Quan Chen(陈灵泉), Yu-Bo Sheng(盛宇波), Lan Zhou(周澜)   

  1. 1 School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
    2 College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
    3 Key Laboratory of Broadband Wireless Communication and Sensor Network Technology(Ministry of Education), Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
    4 Institute of Signal Processing Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • 收稿日期:2018-09-18 修回日期:2018-10-24 出版日期:2019-01-05 发布日期:2019-01-05
  • 通讯作者: Lan Zhou E-mail:zhoul@njupt.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474168 and 11747161), the Priority Academic Program Development of Jiangsu Higher Education Institutions, China, and the China Postdoctoral Science Foundation (Grant No. 2018M642293).

Noiseless linear amplification for the single-photon entanglement of arbitrary polarization-time-bin qudit

Ling-Quan Chen(陈灵泉)1,2, Yu-Bo Sheng(盛宇波)3,4, Lan Zhou(周澜)1,3   

  1. 1 School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
    2 College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
    3 Key Laboratory of Broadband Wireless Communication and Sensor Network Technology(Ministry of Education), Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
    4 Institute of Signal Processing Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • Received:2018-09-18 Revised:2018-10-24 Online:2019-01-05 Published:2019-01-05
  • Contact: Lan Zhou E-mail:zhoul@njupt.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474168 and 11747161), the Priority Academic Program Development of Jiangsu Higher Education Institutions, China, and the China Postdoctoral Science Foundation (Grant No. 2018M642293).

摘要:

Single-photon entanglement (SPE) is an important source in quantum communication. In this paper, we put forward a single-photon-assisted noiseless linear amplification protocol to protect the SPE of an arbitrary polarization-time-bin qudit from the photon transmission loss caused by the practical channel noise. After the amplification, the fidelity of the SPE can be effectively increased. Meanwhile, the encoded polarization-time-bin features of the qudit can be well preserved. The protocol can be realized under the current experimental conditions. Moreover, the amplification protocol can be extended to resist complete photon loss and partial photon loss during the photon transmission. After the amplification, we can not only increase the fidelity of the target state, but also solve the decoherence problem simultaneously. Based on the above features, our amplification protocol may be useful in future quantum communication.

关键词: single-photon entanglement, noiseless linear amplification, polarization-time-bin qudit, complete and partial photon loss

Abstract:

Single-photon entanglement (SPE) is an important source in quantum communication. In this paper, we put forward a single-photon-assisted noiseless linear amplification protocol to protect the SPE of an arbitrary polarization-time-bin qudit from the photon transmission loss caused by the practical channel noise. After the amplification, the fidelity of the SPE can be effectively increased. Meanwhile, the encoded polarization-time-bin features of the qudit can be well preserved. The protocol can be realized under the current experimental conditions. Moreover, the amplification protocol can be extended to resist complete photon loss and partial photon loss during the photon transmission. After the amplification, we can not only increase the fidelity of the target state, but also solve the decoherence problem simultaneously. Based on the above features, our amplification protocol may be useful in future quantum communication.

Key words: single-photon entanglement, noiseless linear amplification, polarization-time-bin qudit, complete and partial photon loss

中图分类号:  (Quantum cryptography and communication security)

  • 03.67.Dd
03.67.Hk (Quantum communication) 03.65.Ud (Entanglement and quantum nonlocality)