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Abstract: A discrete quantum process is defined as a sequence of local states $\rho_t$, $t=0,1,2,...$, satisfying certain conditions on an $L_2$ Hilbert space $H$. If $\rho =\lim\rho_t$ exists, then $...
We show with explicit formulas that one can completely identify an unknown quantum process with only one weakly entangled state; and identify a quantum optical Gaussian process with either one two-mo...
Robust randomized benchmarking of quantum processes
Robust randomized benchmarking quantum processes
2010/10/20
In this Letter we describe a simple randomized benchmarking protocol for quantum information
processors and obtain a sequence of models for the observable delity decay as a function of a
perturbati...
Time as a Quantum Observable, Canonically Conjugated to Energy, and Foundations of Self-Consistent Time Analysis of Quantum Processes
Quantum Processes Canonically Conjugated Self-Consistent Time Analysis
2009/9/4
Recent developments are reviewed and some new results are presented in the study of time in quantum mechanics and quantum electrodynamics as an observable, canonically conjugate to energy. This paper ...