4 citations · 6 across the 9 of their papers we have counts for
9 papers
Fast Fourier transforms and fast Wigner and Weyl functions in large quantum systems
C. Lei, A. Vourdas
Two methods for fast Fourier transforms are used in a quantum context. The first method is for systems with dimension of the Hilbert space with an odd integer, and is i…
Unitarily inequivalent local and global Fourier transforms in multipartite quantum systems
C. Lei, A. Vourdas
A multipartite system comprised of subsystems, each of which is described with `local variables' in and with a -dimensional Hilbert space , is conside…
Coherent states with minimum Gini uncertainty for finite quantum systems
C. Lei, A. Vourdas
Uncertainty relations in terms of the Gini index are studied. The `Gini uncertainty constant' is estimated numerically and compared to an upper bound $\tilde η_…
Selective correlations in finite quantum systems and the Desargues property
C. Lei, A. Vourdas
The Desargues property is well known in the context of projective geometry. An analogous property is presented in the context of both classical and Quantum Physics. In a classical…
The groupoid of bifractional transformations
S. Agyo, C. Lei, A. Vourdas
Bifractional transformations which lead to quantities that interpolate between other known quantities, are considered. They do not form a group, and groupoids are used to described…
An analytic function approach to weak mutually unbiased bases
T. Olupitan, C. Lei, A. Vourdas
Quantum systems with variables in are considered, and three different structures are studied. The first is weak mutually unbiased bases, for which the absolute val…