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Fidelity of states in infinite dimensional quantum systems
Quantum states fidelity entanglement fidelity
2011/9/29
Abstract: In this paper we discuss the fidelity of states in infinite dimensional systems, give an elementary proof of the infinite dimensional version of Uhlmann's theorem, and then, apply it to gene...
Semiclassical approach to fidelity amplitude
fidelity amplitude semiclassical theory chaotic systems Lyapunov decay
2011/7/6
The fidelity amplitude is a quantity which is of paramount importance in echo type experiments. We use semiclassical theory to study the average fidelity amplitude for quantum chaotic systems under ex...