中国物理B ›› 2005, Vol. 14 ›› Issue (7): 1329-1333.doi: 10.1088/1009-1963/14/7/011

• GENERAL • 上一篇    下一篇

Proposal for quantum entanglement of six photons

游珺, 李家华, 谢小涛   

  1. Department of Physics, Huazhong University of Science and Technology,Wuhan 430074, China
  • 收稿日期:2004-11-25 修回日期:2005-03-21 出版日期:2005-06-20 发布日期:2005-06-20
  • 基金资助:
    Project supported partly by the National Natural Science Foundation of China (Grant No 60478029).

Proposal for quantum entanglement of six photons

You Jun (游珺), Li Jia-Hua (李家华), Xie Xiao-Tao (谢小涛)   

  1. Department of Physics, Huazhong University of Science and Technology,Wuhan 430074, China
  • Received:2004-11-25 Revised:2005-03-21 Online:2005-06-20 Published:2005-06-20
  • Supported by:
    Project supported partly by the National Natural Science Foundation of China (Grant No 60478029).

摘要: We propose a different scheme to achieve six-photon entangled states based entirely on the concept of quantum erasure. To begin with, a scheme for making use of a group of four entangled photons to generate six-photon entangled states is presented. Then, with the same technique, the preparation of the six-photon entanglement from five-particle entanglement which is then combined with Bell states is considered. Our experimental methods can be used for the investigations of measurement-based quantum computation and multi-party quantum communication. We find that the success probability is determined by the small coefficients of the entangled states.

Abstract: We propose a different scheme to achieve six-photon entangled states based entirely on the concept of quantum erasure. To begin with, a scheme for making use of a group of four entangled photons to generate six-photon entangled states is presented. Then, with the same technique, the preparation of the six-photon entanglement from five-particle entanglement which is then combined with Bell states is considered. Our experimental methods can be used for the investigations of measurement-based quantum computation and multi-party quantum communication. We find that the success probability is determined by the small coefficients of the entangled states.

Key words: entanglement, Bell states, polarizing beam splitter (PBS), quantum erasure, the trigger particles

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

  • 42.50.Dv
03.65.Ud (Entanglement and quantum nonlocality) 03.67.Mn (Entanglement measures, witnesses, and other characterizations) 03.67.Lx (Quantum computation architectures and implementations) 03.67.Hk (Quantum communication)