6 citations · 13 across the 12 of their papers we have counts for
13 papers
Generating Superposition of Transverse Ising Ground States by Quantum Interaction
Koushik Das, Sayan Mondal, Ujjwal Sen
We investigate superpositions of quantum Ising ground states generated through a quantum interaction, in which the nearest-neighbor coupling strength is promoted to an operator act…
Metrological quantum-to-classical crossover in the volume of a noisy quasiperiodic lattice
Priya Ghosh, Debarupa Saha, Ujjwal Sen +1
Localization-delocalization transitions have recently been proposed for building a class of efficient quantum many-body critical sensors. This work scrutinizes metrological perform…
Exchange Fluctuation Theorems for Non-Markovian Baths in Quantum Collisional Model
Sayan Mondal, Sukrut Mondkar, Ujjwal Sen
The quantum exchange fluctuation theorem relates the probabilities of observing heat transfer along and against the temperature gradient between thermal baths at different temperat…
Memory-assisted advantage for state transfer in disordered quantum many-body scar system
Paranjoy Chaki, Ujjwal Sen
We analyze how memory in disorder facilitates quantum communication in many-body scar systems. We consider three distinct types of disorder, viz., memoryful, and memoryless uniform…
Journey in quantum metrology and sensing from foundations to applications: a review
Priya Ghosh, Tanoy Kanti Konar, Debraj Rakshit +2
We present a review on quantum metrology and sensing, from its foundations to current applications. Highlights of the review include consideration of both frequentist and Bayesian…
Optimal work extraction in measurement-based quantum Otto engines: Non-adiabaticity and generalized measurements can be beneficial
Arunabha Das, Sayan Mondal, Debarupa Saha +1
Measurement-based quantum heat engines have attracted significant interest as alternatives to conventional thermal engines, as they replace the hot thermal reservoir with quantum m…
Resource generation and dynamical complexities in open random quantum circuits
Paranjoy Chaki, Arkaprava Sil, Priya Ghosh +2
Realistic quantum devices are inherently open and often involve environments with memory. Here, we investigate quantum resource generation in two classes of random circuits, namely…
Infinite reduction in absorbing time in quantum walks over classical ones
Shuva Mondal, Amrita Mandal, Ujjwal Sen
We study the absorption time and spreading rate of the discrete-time quantum walk propagating on a line in the presence or absence of an absorber. We analytically establish that in…
Resource-resolved quantum fluctuation theorems in end-point measurement scheme
Sukrut Mondkar, Sayan Mondal, Ujjwal Sen
Fluctuation theorems provide universal constraints on nonequilibrium energy and entropy fluctuations, making them a natural framework to assess how and to what extent quantum resou…
Mpemba effect in self-contained quantum refrigerators: Accelerated cooling
Sayan Mondal, Ujjwal Sen
We consider the qubit-qutrit model of self-contained quantum refrigerator and observe the quantum Mpemba effect in its cooling. In this system, the qutrit acts as the refrigerator…
Quantum sensing with ultracold simulators in lattice and ensemble systems: a review
Keshav Das Agarwal, Sayan Mondal, Ayan Sahoo +3
Sensing of parameters is an important aspect in all disciplines, with applications ranging from fundamental science to medicine. Quantum sensing and metrology is an emerging field…
Entanglement marker for lifetime of time crystal in transmon-modulated open Dicke model
Tanaya Ray, Shuva Mondal, Ujjwal Sen
We investigate the discrete time crystal (DTC) phase in a qubit ensemble, periodically driven by its interaction with either a photon or a transmon field, which is prone to dissipa…
Multicritical quantum sensors driven by symmetry-breaking
Sayan Mondal, Ayan Sahoo, Ujjwal Sen +1
Quantum criticality has been demonstrated as a useful quantum resource for parameter estimation. This includes second-order, topological and localization transitions. In all these…