中国物理B ›› 2010, Vol. 19 ›› Issue (3): 30311-030311.doi: 10.1088/1674-1056/19/3/030311

• GENERAL • 上一篇    下一篇

Generation of entanglement in the atom-cavity-fibre system via adiabatic passage

李艳玲, 方卯发   

  1. College of Physics and Information Science, Hunan Normal University, Changsha 410081, China
  • 收稿日期:2009-06-18 修回日期:2009-08-13 出版日期:2010-03-15 发布日期:2010-03-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No.~10374025) and the Natural Science Foundation of Hunan Province of China (Grant No.~07JJ3013).

Generation of entanglement in the atom-cavity-fibre system via adiabatic passage

Li Yan-Ling(李艳玲) and Fang Mao-Fa(方卯发)   

  1. College of Physics and Information Science, Hunan Normal University, Changsha 410081, China
  • Received:2009-06-18 Revised:2009-08-13 Online:2010-03-15 Published:2010-03-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No.~10374025) and the Natural Science Foundation of Hunan Province of China (Grant No.~07JJ3013).

摘要: A scheme, based on the system composed of three atoms separately trapped in three cavities coupled by optical fibres, for entangling two distant atoms via the adiabatic passage is proposed. It is found that the multi-particle W entangled state can also be generated. Moreover, the quantum information sharing can be implemented using this system. These results may be helpful for the implementation of quantum network and useful in quantum cryptography. This scheme is also convenient for operating since only the laser fields applied to the atoms need to be adjusted to accomplish the processes.

Abstract: A scheme, based on the system composed of three atoms separately trapped in three cavities coupled by optical fibres, for entangling two distant atoms via the adiabatic passage is proposed. It is found that the multi-particle W entangled state can also be generated. Moreover, the quantum information sharing can be implemented using this system. These results may be helpful for the implementation of quantum network and useful in quantum cryptography. This scheme is also convenient for operating since only the laser fields applied to the atoms need to be adjusted to accomplish the processes.

Key words: entanglement generation, quantum information splitting, atom--cavity--fibre system

中图分类号:  (Atom cooling methods)

  • 37.10.De
03.67.Mn (Entanglement measures, witnesses, and other characterizations) 03.67.Dd (Quantum cryptography and communication security) 42.50.Dv (Quantum state engineering and measurements) 42.81.-i (Fiber optics)