24 citations · 113 across the 20 of their papers we have counts for
4 papers · 1 filter
Quantum Discord and Logarithmic Negativity in the Generalized n-qubit Werner State
M. S. Ramkarthik, Devvrat Tiwari, Pranay Barkataki
Quantum Discord (QD) is a measure of the total quantum non-local correlations of a quantum system. The formalism of quantum discord has been applied to various two-qubit mixed stat…
A study of the quasi-probability distributions of the Tavis-Cummings model under different quantum channels
Devvrat Tiwari, Subhashish Banerjee
We study the dynamics of the spin and cavity field of the Tavis-Cummings model using quasi-probability distribution functions and second order coherence function, respectively. The…
Quantum correlations and speed limit of central spin system
Devvrat Tiwari, K. G. Paulson, Subhashish Banerjee
In this article, we consider single, and two-qubit central spin systems interacting with spin baths and discuss their dynamical properties. We consider the cases of interacting and…
Dynamics of two central spins immersed in spin baths
Devvrat Tiwari, Shounak Datta, Samyadeb Bhattacharya +1
In this article we derive the exact dynamics of a two qubit (spin 1/2) system interacting centrally with separate fermionic baths composed of qubits in thermal state. Further, each…