2 citations · 3 across the 5 of their papers we have counts for
5 papers
A complete characterization of eventually entanglement breaking unital quantum channels
B. V. Rajarama Bhat, Pankaj Dey, Biswarup Saha
We obtain a complete characterization of eventually entanglement breaking (EEB) unital channels in terms of some simple commutation properties of their eigenvectors. Specifically,…
Matricial ranges, dilations, and unital contractive maps
Pankaj Dey, Atanu Dhang, Mithun Mukherjee
Let be the Jordan block of size with all eigen values zero. Arveson introduced the notion of the matricial range of an operator in his remarkable article called Subalgebr…
On the rank of extremal marginal states
Repana Devendra, Pankaj Dey, Santanu Dey
Let and be two states on and respectively. The marginal state space, denoted by , is the set of all states $…
Higher Rank Numerical Ranges and Unitary Dilations
Pankaj Dey, Mithun Mukherjee
Here we show that for the closure of the -rank numerical range of a contraction acting on an infinite-dimensional Hilbert space is the inters…
Higher Rank Numerical Ranges of Normal Operators and unitary dilations
Pankaj Dey, Mithun Mukherjee
We describe here the higher rank numerical range, as defined by Choi, Kribs and Zyczkowski, of a normal operator on an infinite dimensional Hilbert space in terms of its spectral m…