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Remote Preparation of Mixed States via Noisy Entanglement

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arxiv quant-ph/0503088 v1 pith:RFFTDSYF submitted 2005-03-09 quant-ph

Remote Preparation of Mixed States via Noisy Entanglement

classification quant-ph
keywords preparationremotechanneldephaseingmixedstateauxiliarycontrolled-not
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present a practical and general scheme of remote preparation for pure and mixed state, in which an auxiliary qubit and controlled-NOT gate are used. We discuss the remote state preparation (RSP) in two important types of decoherent channel (depolarizing and dephaseing). In our experiment, we realize RSP in the dephaseing channel by using spontaneous parametric down conversion (SPDC), linear optical elements and single photon detector.

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