Remote Preparation of Mixed States via Noisy Entanglement
نویسندگان
چکیده
We present a practical and general scheme of remote preparation for pure and mixed state, which is proposed with an auxiliary qubit and controlled-NOT gate. We discuss the remote state preparation (RSP) in two important types of decoherent channel (depolarizing and dephasing). We realize RSP in the dephasing channel in our experiment by using spontaneous parametric down conversion (SPDC), linear optical elements and single photon detector. Our experiment results match the theoretical prediction well.
منابع مشابه
Optimal remote state preparation.
We prove that it is possible to remotely prepare an ensemble of noncommuting mixed states using communication equal to the Holevo information for this ensemble. This remote preparation scheme may be used to convert between different ensembles of mixed states in an asymptotically lossless way, analogous to concentration and dilution for entanglement.
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