Journal of Physics A Mathematical and General · 1998 · 138 citations · 10 references
The fidelity for two displaced squeezed thermal states is computed using the fact that the corresponding density operators belong to the oscillator semigroup.
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Vlatko Vedral, Martin B. Plenio, M. A. Rippin et al. · Physical Review Letters · 1997 · 2K citations · Full text
Fidelity for Mixed Quantum States
Richard Jozsa · Journal of Modern Optics · 1994 · 1.8K citations