中国物理B ›› 2018, Vol. 27 ›› Issue (2): 20302-020302.doi: 10.1088/1674-1056/27/2/020302

• SPECIAL TOPIC—Soft matter and biological physics (Review) • 上一篇    下一篇

Arbitrated quantum signature scheme with continuous-variable squeezed vacuum states

Yan-Yan Feng(冯艳艳), Rong-Hua Shi(施荣华), Ying Guo(郭迎)   

  1. School of Information Science and Engineering, Central South University, Changsha 410083, China
  • 收稿日期:2017-10-19 修回日期:2017-11-17 出版日期:2018-02-05 发布日期:2018-02-05
  • 通讯作者: Ying Guo E-mail:guoyingcsu@sina.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61379153 and 61572529).

Arbitrated quantum signature scheme with continuous-variable squeezed vacuum states

Yan-Yan Feng(冯艳艳), Rong-Hua Shi(施荣华), Ying Guo(郭迎)   

  1. School of Information Science and Engineering, Central South University, Changsha 410083, China
  • Received:2017-10-19 Revised:2017-11-17 Online:2018-02-05 Published:2018-02-05
  • Contact: Ying Guo E-mail:guoyingcsu@sina.com
  • About author:03.67.-a; 03.67.Ac; 03.67.Dd; 03.67.Hk
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61379153 and 61572529).

摘要:

We propose an arbitrated quantum signature (AQS) scheme with continuous variable (CV) squeezed vacuum states, which requires three parties, i.e., the signer Alice, the verifier Bob and the arbitrator Charlie trusted by Alice and Bob, and three phases consisting of the initial phase, the signature phase and the verification phase. We evaluate and compare the original state and the teleported state by using the fidelity and the beam splitter (BS) strategy. The security is ensured by the CV-based quantum key distribution (CV-QKD) and quantum teleportation of squeezed states. Security analyses show that the generated signature can be neither disavowed by the signer and the receiver nor counterfeited by anyone with the shared keys. Furthermore, the scheme can also detect other manners of potential attack although they may be successful. Also, the integrality and authenticity of the transmitted messages can be guaranteed. Compared to the signature scheme of CV-based coherent states, our scheme has better encoding efficiency and performance. It is a potential high-speed quantum signature scheme with high repetition rate and detection efficiency which can be achieved by using the standard off-the-shelf components when compared to the discrete-variable (DV) quantum signature scheme.

关键词: arbitrated quantum signature, squeezed vacuum state, continuous variable, quantum teleportation

Abstract:

We propose an arbitrated quantum signature (AQS) scheme with continuous variable (CV) squeezed vacuum states, which requires three parties, i.e., the signer Alice, the verifier Bob and the arbitrator Charlie trusted by Alice and Bob, and three phases consisting of the initial phase, the signature phase and the verification phase. We evaluate and compare the original state and the teleported state by using the fidelity and the beam splitter (BS) strategy. The security is ensured by the CV-based quantum key distribution (CV-QKD) and quantum teleportation of squeezed states. Security analyses show that the generated signature can be neither disavowed by the signer and the receiver nor counterfeited by anyone with the shared keys. Furthermore, the scheme can also detect other manners of potential attack although they may be successful. Also, the integrality and authenticity of the transmitted messages can be guaranteed. Compared to the signature scheme of CV-based coherent states, our scheme has better encoding efficiency and performance. It is a potential high-speed quantum signature scheme with high repetition rate and detection efficiency which can be achieved by using the standard off-the-shelf components when compared to the discrete-variable (DV) quantum signature scheme.

Key words: arbitrated quantum signature, squeezed vacuum state, continuous variable, quantum teleportation

中图分类号:  (Quantum information)

  • 03.67.-a
03.67.Ac (Quantum algorithms, protocols, and simulations) 03.67.Dd (Quantum cryptography and communication security) 03.67.Hk (Quantum communication)