35 citations · 96 across the 26 of their papers we have counts for
26 papers
Twisted convolution quantum information channels, one-parameter semigroups and their generators
K. R. Parthasarathy
Using the tool of quantum characteristic functions of n-mode states in the boson Fock space Γ(C_n) we construct a semigroup of quantum information channels. This leads to a special…
Computation of sandwiched relative alpha-entropy of two n-mode gaussian states
K R Parthasarathy
A formula for the sandwiched relative -entropy for $0 <…
A pedagogical note on the computation of relative entropy of two -mode gaussian states
K R Parthasarathy
We present a formula for the relative entropy S(rho||sigma) of two n mode gaussian states rho, sigma in the boson Fock space. It is shown that the relative entropy has a classical…
A Common Parametrization for Finite Mode Gaussian States, their Symmetries and associated Contractions with some Applications
Tiju Cherian John, K. R. Parthasarathy
Let be the boson Fock space over a finite dimensional Hilbert space . It is shown that every gaussian symmetry admits a Klauder-Bargmann integral repr…
From CCR to Levy Processes: An Excursion in Quantum Probability
K. R. Parthasarathy
This is an expositary article telling a short story made from the leaves of quantum probability with the following ingredients: (i) A special projective, unitary, irreducible and f…
Asymptotic spectral stability of the Gisin-Percival state diffusion
K. R. Parthasarathy, A. R. Usha Devi
Starting from the Gisin-Percival state diffusion equation for the pure state trajectory of a composite bipartite quantum system and exploiting the purification of a mixed state via…