中国物理B ›› 2014, Vol. 23 ›› Issue (3): 30301-030301.doi: 10.1088/1674-1056/23/3/030301

• GENERAL • 上一篇    下一篇

Dissipative preparation of a steady three-dimensional entangled state via quantum-jump-based feedback

陈丽a, 王洪福b, 张寿a b   

  1. a Center for the Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
    b Department of Physics, College of Science, Yanbian University, Yanji 133002, China
  • 收稿日期:2013-04-25 修回日期:2013-07-16 出版日期:2014-03-15 发布日期:2014-03-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61068001 and 11264042), the Postdoctoral Science Foundation of China (Grant No. 2012M520612), and the Talent Program of Yanbian University of China (Grant No. 950010001).

Dissipative preparation of a steady three-dimensional entangled state via quantum-jump-based feedback

Chen Li (陈丽)a, Wang Hong-Fu (王洪福)b, Zhang Shou (张寿)a b   

  1. a Center for the Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
    b Department of Physics, College of Science, Yanbian University, Yanji 133002, China
  • Received:2013-04-25 Revised:2013-07-16 Online:2014-03-15 Published:2014-03-15
  • Contact: Zhang Shou E-mail:szhang@ybu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61068001 and 11264042), the Postdoctoral Science Foundation of China (Grant No. 2012M520612), and the Talent Program of Yanbian University of China (Grant No. 950010001).

摘要: A robust and scalable scheme to generate a steady three-dimensional entangled state for a V-type atom and a Λ-type atom trapped in a strongly dissipative bimodal cavity is proposed by direct feedback control based on quantum-jump detection. The robustness of this scheme reflects in the insensitivity to detection inefficiencies and the strong ability against the parameter fluctuations in the feedback, driving, and coupling strengths. The influence of atomic spontaneous emission can be suppressed by using the local feedback control. The scalability is ensured that N-dimensional entangled states of two atoms can be deterministically generated.

关键词: three-dimensional entangled state, quantum jump, feedback control

Abstract: A robust and scalable scheme to generate a steady three-dimensional entangled state for a V-type atom and a Λ-type atom trapped in a strongly dissipative bimodal cavity is proposed by direct feedback control based on quantum-jump detection. The robustness of this scheme reflects in the insensitivity to detection inefficiencies and the strong ability against the parameter fluctuations in the feedback, driving, and coupling strengths. The influence of atomic spontaneous emission can be suppressed by using the local feedback control. The scalability is ensured that N-dimensional entangled states of two atoms can be deterministically generated.

Key words: three-dimensional entangled state, quantum jump, feedback control

中图分类号:  (Entanglement production and manipulation)

  • 03.67.Bg
03.65.Yz (Decoherence; open systems; quantum statistical methods) 42.50.Lc (Quantum fluctuations, quantum noise, and quantum jumps) 42.50.Dv (Quantum state engineering and measurements)