Selective and efficient estimation of parameters for quantum process tomography |
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Authors: | Bendersky Ariel Pastawski Fernando Paz Juan Pablo |
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Affiliation: | Departamento de Física, FCEyN UBA, Pabellón 1, Ciudad Universitaria, Buenos Aires, Argentina. |
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Abstract: | We present a new method for quantum process tomography enabling the efficient estimation, with fixed precision, of any of the parameters characterizing a quantum channel. The estimation strategy depends upon the set of matrix elements one selects to estimate. Furthermore, we describe a way to efficiently gather all the information required to efficiently estimate any average survival probability of the channel (i.e., to measure any diagonal element of its chi matrix). |
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