J4 ›› 2012, Vol. 29 ›› Issue (5): 572-576.

• Quantum Optics • Previous Articles     Next Articles

Quantum information transfer about multiple states in spin chain

REN Heng-feng1,WANG Qing-liang1,HOU Sheng-xia2,LIAN Run-ming1,YANG Rui1   

  1. 1 Department of Physics, Xinzhou Teachers University, Xinzhou  034000, China;
    2 College of Light industry, Hebei Polytechnic University, Tangshan  063000, China
  • Received:2011-09-20 Revised:2011-10-26 Published:2012-09-28 Online:2012-09-02

Abstract:

Quantum information transfer is one of the important branches in quantum infromation. Based on the single state quantum information transfer in spin chain, detailedly discuss the transfer of the two and three states in spin chain, and then the scheme is expanded to the arbitrary n states furthermore. Finally, the probability formula is obtained that quantum information of the arbitrary n-state transfers in spin chain, and the condition that the arbitrary n-state information can be transferred perfectly in spin chain is given as well. Accordingly, a reasonable theoretical scheme is offered for the perfect transfer of the arbitrary n-state information.

Key words: quantum information, perfect transfer, free evolution, spin chain

CLC Number: