. . "5" . "P(GAP202/12/1142), S" . "6"^^ . . . "1050-2947" . "Direct estimation of decoherence rates" . "10.1103/PhysRevA.86.052109" . "000310967800003" . . "Physical Review A (Atomic, Molecular, and Optical Physics)" . . "The decoherence rate is a nonlinear channel parameter that describes quantitatively the decay of the off-diagonal elements of a density operator in the decoherence basis. We address the question of how to experimentally access such a nonlinear parameter directly without the need for complete process tomography. In particular, we design a simple experiment working with two copies of the channel, in which the registered mean value of a two-valued measurement directly determines the value of the average decoherence rate. No prior knowledge of the decoherence basis is required."@en . . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Rau, Jochen" . "Ziman, M\u00E1rio" . "The decoherence rate is a nonlinear channel parameter that describes quantitatively the decay of the off-diagonal elements of a density operator in the decoherence basis. We address the question of how to experimentally access such a nonlinear parameter directly without the need for complete process tomography. In particular, we design a simple experiment working with two copies of the channel, in which the registered mean value of a two-valued measurement directly determines the value of the average decoherence rate. No prior knowledge of the decoherence basis is required." . . "4"^^ . "131418" . "1"^^ . . "[0D58B1DE6BA4]" . . . "estimation; decoherence; unitary k designs"@en . . "Direct estimation of decoherence rates" . . "14330" . "86" . "Bu\u017Eek, Vladim\u00EDr" . "Direct estimation of decoherence rates"@en . . "http://link.aps.org/doi/10.1103/PhysRevA.86.052109" . "Direct estimation of decoherence rates"@en . "Rap\u010Dan, Peter" . . . "RIV/00216224:14330/12:00057925!RIV13-GA0-14330___" . "RIV/00216224:14330/12:00057925" . .