31 citations · 55 across the 7 of their papers we have counts for
10 papers · 1 filter
Initial entanglement, entangling unitaries, and completely positive maps
Vinayak Jagadish, R. Srikanth, Francesco Petruccione
The problem of conditions on the initial correlations between the system and the environment that lead to completely positive (CP) or not-completely positive (NCP) maps has been st…
Compressed Sensing Tomography for qudits in Hilbert spaces of non-power-of-two dimensions
Revanth Badveli, Vinayak Jagadish, R. Srikanth +1
The techniques of low-rank matrix recovery were adapted for Quantum State Tomography (QST) previously by D. Gross et al. [Phys. Rev. Lett. 105, 150401 (2010)], where they consider…
Dynamics of quantum correlations in a Qubit-Oscillator system interacting via a dissipative bath
Revanth Badveli, Vinayak Jagadish, S. Akshaya +2
The entanglement dynamics in a bipartite system consisting of a qubit and a harmonic oscillator interacting only through their coupling with the same bath is studied. The considere…
Convex combinations of CP-divisible Pauli channels that are not semigroups
Vinayak Jagadish, R. Srikanth, Francesco Petruccione
We study the memory property of the channels obtained by convex combinations of Markovian channels that are not necessarily quantum dynamical semigroups (QDSs). In particular, we c…
Convex Combinations of Pauli Semigroups: Geometry, Measure and an Application
Vinayak Jagadish, R. Srikanth, Francesco Petruccione
Finite-time Markovian channels, unlike their infinitesimal counterparts, do not form a convex set. As a particular instance of this observation, we consider the problem of mixing t…
Measure of not-completely-positive qubit maps: the general case
Vinayak Jagadish, R. Srikanth, Francesco Petruccione
We show that the set of not-completely-positive (NCP) maps is unbounded, unless further assumptions are made. This is done by first proposing a reasonable definition of a valid NCP…