2 citations · 4 across the 15 of their papers we have counts for
8 papers · 1 filter
Role reversal in quantum Mpemba effect
Arunabha Das, Paranjoy Chaki, Priya Ghosh +1
We investigate the quantum Mpemba effect in a dissipative Dicke model, which consists of a spin-1/2 ensemble coupled to a bosonic mode, which in turn is coupled to a bosonic bath.…
Encoding parameters by measurement: Forgetting can be better in quantum metrology
Shuva Mondal, Priya Ghosh, Ujjwal Sen
We introduce quantum parameter estimation with the encoding being via a quantum measurement. We quantify the precision for estimating parameters characterizing a general two-outcom…
Comparing physical quantities with finite-precision: beyond standard metrology and an illustration for cooling in quantum processes
Anindita Sarkar, Paranjoy Chaki, Priya Ghosh +1
We propose a general framework to compare the values of a physical quantity pertaining to two - or more - physical setups, in the finite-precision scenario. Such a situation requir…
Optimal quantum precision in noise estimation: Is entanglement necessary?
Shuva Mondal, Priya Ghosh, Ujjwal Sen
We ask whether the optimal probe is entangled, and if so, what is its character and amount, for estimating the noise parameter of a large class of local quantum encoding processes…
Role of phase of optimal probe in noncommutativity vs coherence in quantum multiparameter estimation
Ritopriyo Pal, Priya Ghosh, Ahana Ghoshal +1
Quantum multiparameter estimation offers a framework for the simultaneous estimation of multiple parameters, pertaining to possibly noncommutating observables. While the optimal pr…
Unbounded entanglement-sustaining sequential local quantum state discrimination
Debarupa Saha, Priya Ghosh, Kornikar Sen +2
Two pure orthogonal quantum states can be perfectly distinguished by sequential local action of multiple pairs of parties. However, this process typically leads to the complete dis…
Fluctuation in energy extraction from quantum batteries: How open should the system be to control it?
Anindita Sarkar, Paranjoy Chaki, Priya Ghosh +1
We ask whether there exists a relation between controllability of the fluctuations in extractable energy of a quantum battery and (a) how open an arbitrary but fixed battery system…
Path superposition activating perfect quantum teleportation ability for separable states
Sayan Mondal, Priya Ghosh, Ujjwal Sen
Quantum teleportation is a quintessential quantum communication protocol that enables the transmission of an arbitrary quantum state between two distant parties without physically…