49 citations · 153 across the 31 of their papers we have counts for
31 papers
Spread complexity as a probe in generalized and long-range Aubry-Andre-Harper models
Triyas Sapui, Tanoy Kanti Konar, Subinay Dasgupta +1
We investigate the spread complexity of quantum quenches in generalized and long-range Aubry-Andre-Harper (AAH) models, encompassing regimes with and without mobility edges. In par…
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…
Interplay of Nonstabilizerness and Ergotropy in Quantum Batteries
Tanoy Kanti Konar, Jakub Zakrzewski
Nonstabilizerness plays an essential role in the efficient simulation of quantum systems on quantum computers. In this work, we investigate its role in the context of quantum batte…
Quantum-enhanced sensing from the interplay of long-range interactions and non-Hermiticity
Keshav Das Agarwal, Tanoy Kanti Konar, Leela Ganesh Chandra Lakkaraju +1
Long-range (LR) quantum spin systems offer promising advantages for quantum information processing and sensing. Here, we investigate parameter estimation in an long-range XX spin m…
Ergotropic Mpemba crossings in finite-dimensional quantum batteries
Triyas Sapui, Tanoy Kanti Konar, Aditi Sen De
The quantum Mpemba effect is a counterintuitive phenomenon in which a state initially farther from equilibrium relaxes more rapidly than one that starts nearer to equilibrium. In t…
Quantum error correction via purification using a single auxiliary
Chandrima B. Pushpan, Tanoy Kanti Konar, Aditi Sen De +1
We propose a single auxiliary-assisted purification-based framework for quantum error correction, capable of correcting errors that drive a system from its ground-state subspace in…
Quantum advantage unlocked: Charging quantum batteries with K-regular graph stabilizers
Debkanta Ghosh, Tanoy Kanti Konar, Gianluca Francica +2
Regular graphs find broad applications ranging from quantum communication to quantum computation. Motivated by this, we investigate the design of a quantum battery based on a K-reg…
Probing non-equilibrium physics through the two-body Bell correlator
Abhishek Muhuri, Tanoy Kanti Konar, Leela Ganesh Chandra Lakkaraju +1
Identifying equilibrium criticalities and phases from the dynamics of a system, known as a dynamical quantum phase transition (DQPT), is a challenging task when relying solely on l…
Enhancing work-extraction in quantum batteries via correlated reservoirs
Sejal Ahuja, Tanoy Kanti Konar, Aditi Sen De
Going beyond isolated system dynamics, we examine how local and spatially correlated reservoirs influence the work extraction in quantum batteries. By employing a one-dimensional s…
Genuine multipartite entanglement as a probe of many-body localization in disordered spin chains with Dzyaloshinskii-Moriya interactions
Triyas Sapui, Keshav Das Agarwal, Tanoy Kanti Konar +2
We demonstrate that the quenched average genuine multipartite entanglement (GME) can approach its maximum value in the ergodic phase of a disordered quantum spin model. In contrast…
Role of quantum state texture in probing resource theories and quantum phase transition
Ayan Patra, Tanoy Kanti Konar, Pritam Halder +1
Building on the recently developed quantum state texture resource theory, we exhibit that the difference between maximum and minimum textures is a valid purity monotone in any dime…
Critical quantum metrology using non-Hermitian spin model with RT-symmetry
Keshav Das Agarwal, Tanoy Kanti Konar, Leela Ganesh Chandra Lakkaraju +1
The non-Hermitian transverse model with Kaplan-Shekhtman-Entin-Wohlman-Aharony (KSEA) interaction having -symmetry, referred to as model, possesses both…
Developing universal logical state-purification strategy for quantum error correcting codes
Chandrima B. Pushpan, Tanoy Kanti Konar, Aditi Sen De +1
We develop a measurement-based protocol for simultaneously purifying arbitrary logical states in multiple quantum error correcting codes with unit fidelity and finite probability,…
Limits on broadcasting non-stabilizerness through unrestricted operations
Rivu Gupta, Tanoy Kanti Konar, Ayan Patra +1
In the resource theory of non-stabilizerness, we prove that stabilizer operations cannot replicate or broadcast the "magic" resource of all quantum states in an arbitrary finite di…
Constructive impact of Wannier-Stark field on environment-boosted quantum batteries
Animesh Ghosh, Tanoy Kanti Konar, Leela Ganesh Chandra Lakkaraju +1
Using the ground states of the Bose- and Fermi-Hubbard model as the battery's initial state, we demonstrate that using the Wannier-Stark (WS) field for charging in addition to onsi…
Expediting quantum state transfer through the long-range extended XY model
Sejal Ahuja, Tanoy Kanti Konar, Leela Ganesh Chandra Lakkaraju +1
Going beyond short-range interactions, we explore the role of long-range interactions in the extended XY model for transferring quantum states through evolution. In particular, emp…
Floquet driven long-range interactions induce super-extensive scaling in quantum batteries
Stavya Puri, Tanoy Kanti Konar, Leela Ganesh Chandra Lakkaraju +1
Achieving quantum advantage in energy storage and power extraction is a primary objective in the design of quantum-based batteries. We explore how long-range (LR) interactions in c…
Measurement-based qudit quantum refrigerator with subspace cooling
Debkanta Ghosh, Tanoy Kanti Konar, Aditi Sen De
We develop a method to transform a collection of higher-dimensional spin systems from the thermal state with a very high temperature of a local spin-s Hamiltonian to a low-lying en…
Slow decay rate of correlations induced by long-range extended Dzyaloshinskii-Moriya interactions
Tanoy Kanti Konar, Leela Ganesh Chandra Lakkaraju, Aditi Sen De
We examine the impact of long-range Dzyaloshinskii-Moriya (DM) interaction in the extended model on the phase diagram as well as the static and dynamical properties of quantum…
Discovering Factorization Surface of Quantum Spin Chains with Machine Learning
Nakul Aggarwal, Keshav Das Agarwal, Tanoy Kanti Konar +2
Entanglement in quantum many-body systems is required for a variety of quantum information tasks, making it crucial to identify the parameter space in which the ground state is ful…
Tradeoff between noise and banding in a quantum adder with qudits
Gaurang Agrawal, Tanoy Kanti Konar, Leela Ganesh Chandra Lakkaraju +1
Quantum addition based on the quantum Fourier transform can be an integral part of a quantum circuit and proved to be more efficient than the existing classical ripple carry adder.…
Quantum resources in Harrow-Hassidim-Lloyd algorithm
Pradeep Kumar, Tanoy Kanti Konar, Leela Ganesh Chandra Lakkaraju +1
Quantum algorithms have the ability to reduce runtime for executing tasks beyond the capabilities of classical algorithms. Therefore, identifying the resources responsible for quan…
Recognizing critical lines via entanglement in non-Hermitian systems
Keshav Das Agarwal, Tanoy Kanti Konar, Leela Ganesh Chandra Lakkaraju +1
The non-Hermitian model exhibits counterintuitive phenomena that are not observed in the Hermitian counterparts. To probe the competition between non-Hermitian and Hermitian intera…
Detecting exceptional points through dynamics in non-Hermitian systems
Keshav Das Agarwal, Tanoy Kanti Konar, Leela Ganesh Chandra Lakkaraju +1
Non-Hermitian rotation-time reversal (RT)-symmetric spin models possess two distinct phases, the unbroken phase in which the entire spectrum is real and the broken phase which cont…