Faithful teleportation via multi-particle quantum states in a network with many agents

  • Authors:
  • Min Jiang;Hui Li;Zeng-Ke Zhang;Jia Zeng

  • Affiliations:
  • School of Electronics and Information Engineering, Soochow University, Suzhou, China 215006;Department of Automation, Tsinghua University, Beijing, China 100084;Department of Automation, Tsinghua University, Beijing, China 100084;The 208th Institute of the Second Research Academy, CASIC, Beijing, China 100854

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2012

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Abstract

An efficient scheme is proposed for faithful teleportation of an arbitrary unknown multi-particle state via multi-particle quantum states, in which the teleportation is completely deterministic providing that one can successfully construct a group of EPR pairs. Our scheme can effectively avoid possible destruction of the unknown state to be teleported, which however may occur in existing probabilistic teleportation schemes. In addition, we develop a scheme for establishing a faithful quantum channel for both indirect and direct teleportation multi-particle system, which can be applied in a teleportation network where intermediate agents exist between a sender and a receiver. Compared to the indirect construction of the faithful channel, the required auxiliary particle resources, local operations and classical communications in the direct construction scheme are considerably reduced.