3 citations · 12 across the 24 of their papers we have counts for
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Nonlinearity-assisted advantage for open Dicke-quantum batteries
Aparajita Bhattacharyya, Pratha Dongre, Ujjwal Sen
We analyze the performance of a quantum battery in terms of energy storage and energy extraction, assisted by nonlinearities in a Dicke quantum battery utilizing an open-system app…
Approximate second laws and energy extraction from quantum batteries
Debarupa Saha, Aparajita Bhattacharyya, Ujjwal Sen
Conservation of energy under thermal operations, \textbf{TO}, is ensured by commutation of the unitary generating such operations with the total Hamiltonian. However in realistic s…
Role of energy-invariant assistants in energy extraction from quantum batteries
Paranjoy Chaki, Aparajita Bhattacharyya, Kornikar Sen +1
We investigate the role of energy-invariant assistants in energy extraction from quantum batteries. To this end, for energy extraction, we restrict ourselves to unitaries that join…
Precision in estimating independent local fields: attainable bound and indispensability of genuine multiparty entanglement
Aparajita Bhattacharyya, Ujjwal Sen
Estimation of local quantum fields is a crucial aspect of quantum metrology applications, and often also forms the test-bed to analyze the utility of quantum resources, like entang…
Positive and non-positive measurements in energy distillation from quantum batteries
Paranjoy Chaki, Aparajita Bhattacharyya, Kornikar Sen +1
We investigate energy distillation from quantum batteries within the framework of generalized quantum measurements, including both positive operator-valued measurements (POVMs) and…
Quantum Heat Transformers
Arghya Maity, Paranjoy Chaki, Ahana Ghoshal +1
We propose a quantum heat transformer (QHT), a quantum thermodynamic device that modulates temperature gradients between two thermal junctions in quantum systems. Functionally, the…