9 papers · 1 filter
X-states of a qubit pair of double classicality
Arsen Khvedelidze, Dimitar Mladenov, Astghik Torosyan
A special class of states of 2-qubits which are simultaneously separable and have positive semidefinite Wigner functions is described.
Towards parameterizing the entanglement body of a qubit pair
Arsen Khvedelidze, Dimitar Mladenov, Astghik Torosyan
A method allowing to increase a computational efficiency of evaluation of non-local characteristics of a pair of qubits is described. The method is based on the construction of coo…
On the hierarchy of classicality and symmetry of quantum states
Arsen Khvedelidze, Astghik Torosyan
The interrelation between classicality/quantumness and symmetry of states is discussed within the phase-space formulation of finite-dimensional quantum systems. We derive represent…
On the nonclassicality distance indicator of qudits
Arsen Khvedelidze, Astghik Torosyan
We consider the nonclassicality distance indicator of a state in finite-dimensional quantum systems which is evaluating a state nonclassicality by its remoteness from the set of "c…
Generalizing Stratonovich-Weyl axioms for composite systems
Arsen Khvedelidze
The statistical model of quantum mechanics is based on the mapping between operators on the Hilbert space and functions on the phase space. This map can be implemented by an operat…
Parameterizing Qudit States
Arsen Khvedelidze, Dimitar Mladenov, Astghik Torosyan
Quantum systems with a finite number of states at all times have been a primary element of many physical models in nuclear and elementary particle physics, as well as in condensed…