78 citations · 305 across the 21 of their papers we have counts for
5 papers · 1 filter
Population inversion and entanglement in single and double glassy Jaynes-Cummings models
Ahana Ghoshal, Sreetama Das, Aditi Sen De +1
We find that a suppression of the collapse and revival of population inversion occurs in response to insertion of Gaussian quenched disorder in atom-cavity interaction strength in…
Beating detection loophole in nonlinear entanglement witnesses
Kornikar Sen, Sreetama Das, Ujjwal Sen
Detectors in the laboratory are often unlike their ideal theoretical cousins. They have non-ideal efficiencies, which may then lead to non-trivial implications. We show how it is p…
Nearly Markovian maps and entanglement-based bound on corresponding non-Markovianity
Sreetama Das, Sudipto Singha Roy, Samyadeb Bhattacharya +1
We identify a set of dynamical maps of open quantum system, and refer to them as "-Markovian" maps. It is constituted of maps which, in a higher dimensional system-environment…
Signaling versus distinguishing different superpositions of same pure quantum state
Chirag Srivastava, Sreetama Das, Aditi Sen De +1
Different ensembles of quantum states can have the same average nonpure state. Distinguishing between such constructions, via different mixing procedures of the same nonpure quantu…
Quantum Process Randomness
Sreetama Das, Asutosh Kumar, Aditi Sen De +1
We study the optimization of any quantum process by minimizing the "randomness" in the measurement result at the output of that quantum process. We conceptualize and propose a meas…