Experimental realization of optimal noise estimation for a general Pauli channel |
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| Authors: | Chiuri A Rosati V Vallone G Pádua S Imai H Giacomini S Macchiavello C Mataloni P |
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| Institution: | Dipartimento di Fisica, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy. |
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| Abstract: | We present the experimental realization of the optimal estimation protocol for a Pauli noisy channel. The method is based on the generation of 2-qubit Bell states and the introduction of quantum noise in a controlled way on one of the state subsystems. The efficiency of the optimal estimation, achieved by a Bell measurement, is shown to outperform quantum process tomography. |
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