3 papers
quant-ph2025
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.
quant-ph2024
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…
math.GR2024
One other parameterization of SU(4) group
Arsen Khvedelidze, Dimitar Mladenov, Astghik Torosyan
We propose a special decomposition of the Lie algebra into the direct sum of orthogonal subspaces, $\mathfrak{su}(4)=\mathfrak{k}\oplus\mathfrak{a}\oplus\mathfra…