中国物理B ›› 2009, Vol. 18 ›› Issue (12): 5155-5160.doi: 10.1088/1674-1056/18/12/010

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Quantum information procession with fermions based on charge detection

唐莉   

  1. Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2008-09-18 修回日期:2008-12-16 出版日期:2009-12-20 发布日期:2009-12-20

Quantum information procession with fermions based on charge detection

Tang Li(唐莉)†   

  1. Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2008-09-18 Revised:2008-12-16 Online:2009-12-20 Published:2009-12-20

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摘要： This paper proposes a fermionic linear optical scheme for the teleportation and entanglement concentration via entanglement swapping based on charge detection. It also proves that this method is useful in generating entangled states such as GHZ states, W states, and cluster states by using fermionic polarizing beam splitters and single spin rotations assisted by a parity check on the fermionic qubits. This scheme is nearly deterministic (i.e., with 100\% successful probability) and does not need the joint Bell state measurement required in the previous schemes.

Abstract: This paper proposes a fermionic linear optical scheme for the teleportation and entanglement concentration via entanglement swapping based on charge detection. It also proves that this method is useful in generating entangled states such as GHZ states, W states, and cluster states by using fermionic polarizing beam splitters and single spin rotations assisted by a parity check on the fermionic qubits. This scheme is nearly deterministic (i.e., with 100% successful probability) and does not need the joint Bell state measurement required in the previous schemes.

Key words: quantum information processing, charge detection

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.Lx (Quantum computation architectures and implementations) 03.67.Mn (Entanglement measures, witnesses, and other characterizations)