›› 2015, Vol. 24 ›› Issue (3): 34208-034208.doi: 10.1088/1674-1056/24/3/034208

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

Non-Gaussian quantum states generation and robust quantum non-Gaussianity via squeezing field

唐绪兵a b, 高放b, 王耀雄b, 匡森c, 双丰b c   

  1. a School of Mathematics & Physics Science and Engineering, Anhui University of Technology, Ma'anshan 243032, China;
    b Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China;
    c Department of Automation, University of Science & Technology of China, Hefei 230027, China
  • 收稿日期:2014-12-03 修回日期:2015-01-30 出版日期:2015-03-05 发布日期:2015-03-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61203061 and 61074052), the Outstanding Young Talent Foundation of Anhui Province, China (Grant No. 2012SQRL040), and the Natural Science Foundation of Anhui Province, China (Grant No. KJ2012Z035).

Non-Gaussian quantum states generation and robust quantum non-Gaussianity via squeezing field

Tang Xu-Bing (唐绪兵)a b, Gao Fang (高放)b, Wang Yao-Xiong (王耀雄)b, Kuang Sen (匡森)c, Shuang Feng (双丰)b c   

  1. a School of Mathematics & Physics Science and Engineering, Anhui University of Technology, Ma'anshan 243032, China;
    b Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China;
    c Department of Automation, University of Science & Technology of China, Hefei 230027, China
  • Received:2014-12-03 Revised:2015-01-30 Online:2015-03-05 Published:2015-03-05
  • Contact: Shuang Feng E-mail:fshuang@iim.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61203061 and 61074052), the Outstanding Young Talent Foundation of Anhui Province, China (Grant No. 2012SQRL040), and the Natural Science Foundation of Anhui Province, China (Grant No. KJ2012Z035).

摘要: Recent studies show that quantum non-Gaussian states or using non-Gaussian operations can improve entanglement distillation, quantum swapping, teleportation, and cloning. In this work, employing a strategy of non-Gaussian operations (namely subtracting and adding a single photon), we propose a scheme to generate non-Gaussian quantum states named single-photon-added and -subtracted coherent (SPASC) superposition states by implementing Bell measurements, and then investigate the corresponding nonclassical features. By squeezed the input field, we demonstrate that robustness of non- Gaussianity can be improved. Controllable phase space distribution offers the possibility to approximately generate a displaced coherent superposition states (DCSS). The fidelity can reach up to F≥0.98 and F ≥ 0.90 for size of amplitude z = 1.53 and 2.36, respectively.

关键词: non-Gaussian operation, Bell measurements, robustness, fidelity

Abstract: Recent studies show that quantum non-Gaussian states or using non-Gaussian operations can improve entanglement distillation, quantum swapping, teleportation, and cloning. In this work, employing a strategy of non-Gaussian operations (namely subtracting and adding a single photon), we propose a scheme to generate non-Gaussian quantum states named single-photon-added and -subtracted coherent (SPASC) superposition states by implementing Bell measurements, and then investigate the corresponding nonclassical features. By squeezed the input field, we demonstrate that robustness of non- Gaussianity can be improved. Controllable phase space distribution offers the possibility to approximately generate a displaced coherent superposition states (DCSS). The fidelity can reach up to F≥0.98 and F ≥ 0.90 for size of amplitude z = 1.53 and 2.36, respectively.

Key words: non-Gaussian operation, Bell measurements, robustness, fidelity

中图分类号:  (Quantum state engineering and measurements)

  • 42.50.Dv
42.50.Ex (Optical implementations of quantum information processing and transfer)