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Quantum Information Processing using coherent states in cavity QED

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arxiv quant-ph/0503051 v1 pith:IUUQ24RQ submitted 2005-03-04 quant-ph

Quantum Information Processing using coherent states in cavity QED

classification quant-ph
keywords fieldsopticalatomscoherentc-notgatesschemestates
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Using the highly detuned interaction between three-level $\Lambda$-type atoms and coherent optical fields, we can realize the C-NOT gates from atoms to atoms, optical fields to optical fields, atoms to optical fields and optical fields to atoms. Based on the realization of the C-NOT gates we propose an entanglement purification scheme to purify a mixed entangled states of coherent optical fields. The simplicity of the current scheme makes it possible that it will be implemented in experiment in the near future.

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