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quant-ph2022
Comparing classicality of qutrits from Hilbert-Schmidt, Bures and Bogoliubov-Kubo-Mori ensembles
Arsen Khvedelidze, Astghik Torosyan
In the report we analyze the indicator/measure of classicality of quantum states defined as the probability to find a state with a positive Wigner function within a unitary invaria…
quant-ph2016
Spectrum and separability of mixed 2-qubit X-states
Arsen Khvedelidze, Astghik Torosyan
The separable mixed 2-qubit X-states are classified in accordance with degeneracies in the spectrum of density matrices. It is shown that there are four classes of separable X-stat…