Selective and efficient estimation of parameters for quantum process tomography.
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).
Departamento de Física, FCEyN UBA, Pabellón 1, Ciudad Universitaria, Buenos Aires, Argentina.
Ariel
A
Bendersky
Fernando
F
Pastawski
Juan Pablo
JP
Paz