Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Bhattacharyya, Aparajita"'
We analyze the performance of a quantum battery in terms of energy storage and energy extraction, assisted by nonlinearities in a charger-battery system utilizing an open-system approach. In particular, we consider two types of nonlinearities in the
Externí odkaz:
http://arxiv.org/abs/2410.00618
We investigate the role of catalysts in energy extraction from quantum batteries. Two basic classes of catalysts are proposed in this regard, viz., energy- and state-invariant catalysts. Moreover, we separately consider cases when the catalysts are o
Externí odkaz:
http://arxiv.org/abs/2409.14153
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 scenarios, perturbations or disturbances in the system are unavoidable,
Externí odkaz:
http://arxiv.org/abs/2409.05971
Autor:
Bhattacharyya, Aparajita, Sen, Ujjwal
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 entanglement. However, so far, this has been analyzed using the same local f
Externí odkaz:
http://arxiv.org/abs/2407.20142
We extend the concept of stochastic energy extraction from quantum batteries to the scenario where both positive operator-valued (POV) and physically realizable non-positive operator-valued measurements are applied (NPOVMs) on the auxiliary connected
Externí odkaz:
http://arxiv.org/abs/2404.18745
We find that estimation of coupling strength of arbitrary-body encoding Hamiltonians provides a scaling that increases monotonically with an increase in the number of interacting particles, in the limit of large number of particles. We perform this a
Externí odkaz:
http://arxiv.org/abs/2401.06729
Autor:
Ray, Tanaya, Mondal, Sayan, Bhattacharyya, Aparajita, Ghoshal, Ahana, Rakshit, Debraj, Sen, Ujjwal
We study the self-contained three-qubit quantum refrigerator, with a three-body interaction enabling cooling of the target qubit, in presence of baths composed of anharmonic quantum oscillators with Kerr-type nonlinearity. We show that such baths, lo
Externí odkaz:
http://arxiv.org/abs/2311.10499
We explore the performance of three- and two-stroke heat engines with a qutrit working substance in charging two-level quantum batteries. We first classify the heat engines into two groups depending on their working methods. The first type of heat en
Externí odkaz:
http://arxiv.org/abs/2309.15634
The Landauer principle states that decrease in entropy of a system, inevitably leads to a dissipation of heat to the environment. This statement is usually established by considering the system to be in contact with an environment that is initially i
Externí odkaz:
http://arxiv.org/abs/2309.09678
We discuss the idea of extracting energy stochastically from a quantum battery, which is based on performing a projective measurement on an auxiliary system. The battery is initially connected to the auxiliary system and allowed to evolve unitarily.
Externí odkaz:
http://arxiv.org/abs/2307.16856