中国物理B ›› 2017, Vol. 26 ›› Issue (12): 124205-124205.doi: 10.1088/1674-1056/26/12/124205

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Parallel generation of 31 tripartite entangled states based on optical frequency combs

Jing Zhang(张静), Yan-Fang Wang(王艳芳), Xiao-Yu Liu(刘晓宇), Rong-Guo Yang(杨荣国)   

  1. 1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, China;
    2. College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China;
    3. Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • 收稿日期:2017-06-05 修回日期:2017-08-03 出版日期:2017-12-05 发布日期:2017-12-05
  • 通讯作者: Jing Zhang E-mail:zjj@sxu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11504218, 11634008, 11674203, 11574187, 61108003, and 61227902), and the National Key Research and Development Program of China (Grant No. 2016YFA0301404).

Parallel generation of 31 tripartite entangled states based on optical frequency combs

Jing Zhang(张静)1,2,3, Yan-Fang Wang(王艳芳)1,2, Xiao-Yu Liu(刘晓宇)1,2, Rong-Guo Yang(杨荣国)1,2,3   

  1. 1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, China;
    2. College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China;
    3. Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • Received:2017-06-05 Revised:2017-08-03 Online:2017-12-05 Published:2017-12-05
  • Contact: Jing Zhang E-mail:zjj@sxu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11504218, 11634008, 11674203, 11574187, 61108003, and 61227902), and the National Key Research and Development Program of China (Grant No. 2016YFA0301404).

摘要:

Quantum entangled states, especially those having particular properties, are key resources for quantum information and quantum computation. In this paper, we put forward a new scheme to produce 31 continuous-variable (CV) tripartite entanglement fields based on three optical frequency combs via cascade nonlinear processes in an optical parametric cavity, and investigate the spectral characteristics of three frequency combs. The center wavelengths of the three combs are designed as 852 nm, 780 nm (atomic transition lines), and 1550 nm (fiber communication wavelength). The positivity under partial transposition (PPT) criterion, which is sufficient and necessary, is used to evaluate the entanglement in each group of comb lines. This scheme is experimentally feasible and valuable for constructing quantum information networks in future.

关键词: quantum optics, nonlinear optics, quantum fluctuation

Abstract:

Quantum entangled states, especially those having particular properties, are key resources for quantum information and quantum computation. In this paper, we put forward a new scheme to produce 31 continuous-variable (CV) tripartite entanglement fields based on three optical frequency combs via cascade nonlinear processes in an optical parametric cavity, and investigate the spectral characteristics of three frequency combs. The center wavelengths of the three combs are designed as 852 nm, 780 nm (atomic transition lines), and 1550 nm (fiber communication wavelength). The positivity under partial transposition (PPT) criterion, which is sufficient and necessary, is used to evaluate the entanglement in each group of comb lines. This scheme is experimentally feasible and valuable for constructing quantum information networks in future.

Key words: quantum optics, nonlinear optics, quantum fluctuation

中图分类号:  (Quantum optics)

  • 42.50.-p
42.65.-k (Nonlinear optics) 42.50.Lc (Quantum fluctuations, quantum noise, and quantum jumps)