13 citations · 52 across the 10 of their papers we have counts for
10 papers · 1 filter
Thermalization of isolated quantum many-body system and the role of entanglement
Tanmay Saha, Pratik Ghosal, Pratapaditya Bej +2
Thermalization of an isolated quantum system has been a nontrivial problem since the early days of quantum mechanics. In generic isolated quantum systems, nonequilibrium dynamics i…
Geometry of quantum state space and entanglement
Pratapaditya Bej, Prasenjit Deb
Recently, an explicit relation between a measure of entanglement and a geometric entity has been reported in Quantum Inf. Process. (2016) 15:1629-1638. It has been shown that if a…
Study of Quantum Walk over a Square Lattice
Arkaprabha Ghosal, Prasenjit Deb
Quantum random walk finds application in efficient quantum algorithms as well as in quantum network theory. Here we study the mixing time of a discrete quantum walk over a square l…
Identifying quantum subsystems using Clausius' second law of thermodynamics
Adam Stokes, Prasenjit Deb, Almut Beige
There are many ways to decompose the Hilbert space H of a composite quantum system into tensor product subspaces. Different subsystem decompositions generally imply different inter…
Excessive distribution of quantum entanglement
Margherita Zuppardo, Tanjung Krisnanda, Tomasz Paterek +6
We classify protocols of entanglement distribution as excessive and non-excessive ones. In a non-excessive protocol, the gain of entanglement is bounded by the amount of entangleme…
Cavity-mediated collective laser-cooling of a non-interacting atomic gas inside an asymmetric trap to very low temperatures
Oleg Kim, Prasenjit Deb, Almut Beige
In this paper, we identify a many-particle phonon expectation value with the ability to induce collective dynamics in a non-interacting atomic gas inside an optical cavity. We…
Geometry of quantum state space and quantum correlations
Prasenjit Deb
Quantum state space is endowed with a metric structure and Riemannian monotone metric is an important geometric entity defined on such a metric space. Riemannian monotone metrics a…
Complementary correlations and entanglement distribution
Prasenjit Deb
Complementary correlations can reveal the genuine quantum correlations present in a composite quantum system. Here we investigate the relation between complementary correlations an…
Role of complementary correlations in the evolution of classical and quantum correlations under Markovian decoherence
Prasenjit Deb, Manik Banik
Quantum correlation lies at the very heart of almost all the non-classical phenomena exhibited by quantum systems composed of more than one subsystem. In the recent days it has bee…
Wigner-Yanase skew information and entanglement generation in quantum measurement
Manik Banik, Prasenjit Deb, Samyadeb Bhattacharya
The first step of quantum measurement procedure is known as \emph{premeasurement}, during when correlation between measuring system and measurement apparatus is established. One co…