Quantum Chernoff bound as a measure of nonclassicality for one-mode Gaussian states
Mădălina Boca, Iulia Ghiu, Paulina Marian, Tudor A. Marian · Physical Review A · 2009
We evaluate a Gaussian distance-type degree of nonclassicality for a single-mode Gaussian state of the quantum radiation field by use of the recently discovered quantum Chernoff bound. The general properties of the quantum Chernoff overlap and its relation to the Uhlmann fidelity are interestingly illustrated by our approach.