Quantum Information Processing Without Joint Measurement

Details Quantum Information Processing Without Joint Measurement Quantum Information Processing Without Joint Measurement

2005-05-22

arxiv.org/abs/quant-ph/0505160v1

Physics

Quantum Physics

6 pages, 2 figures

Scientific paper

We propose a linear optical scheme for the teleportation of unknown ionic states, the entanglement concentration for nonmaximally entangled states for ions via entanglement swapping and the remote preparation for ionic entangled states. The unique advantage of the scheme is that the joint Bell-state measurement needed in the previous schemes is not needed in the current scheme, i.e. the joint Bell-state measurement has been converted into the product of separate measurements on single ions and photons. In addition, the current scheme can realize the quantum information processes for ions by using linear optical elements, which simplify the implementation of quantum information processing for ions.

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