86 citations · 447 across the 18 of their papers we have counts for
19 papers
Localization Driven Quantum Sensing
Ayan Sahoo, Utkarsh Mishra, Debraj Rakshit
We show that the delocalization-localization transition in a quantum-many body (QMB) systems is a compelling quantum resource for achieving quantum-enhanced sensitivity in paramete…
Gate-tunable, superconductor-semiconductor parametric amplifier
D. Phan, P. Falthansl-Scheinecker, U. Mishra +4
We have built a parametric amplifier with a Josephson field effect transistor (JoFET) as the active element. The device's resonant frequency is field-effect tunable over a range of…
Floquet dynamical quantum phase transitions under synchronized periodic driving
R. Jafari, Alireza Akbari, Utkarsh Mishra +1
We study a generic class of fermionic two-band models under synchronized periodic driving, i.e., with the different terms in a Hamiltonian subject to periodic drives with the same…
Integrable quantum many-body sensors for AC field sensing
Utkarsh Mishra, Abolfazl Bayat
Quantum sensing is inevitably an elegant example of the supremacy of quantum technologies over their classical counterparts. One of the desired endeavors of quantum metrology is AC…
Global sensing and its impact for quantum many-body probes with criticality
Victor Montenegro, Utkarsh Mishra, Abolfazl Bayat
Quantum sensing is one of the key areas which exemplifies the superiority of quantum technologies. Nonetheless, most quantum sensing protocols operate efficiently only when the unk…
Driving enhanced quantum sensing in partially accessible many-body systems
Utkarsh Mishra, Abolfazl Bayat
The Ground-state criticality of many-body systems is a resource for quantum-enhanced sensing, namely the Heisenberg precision limit, provided that one has access to the whole syste…
Trends of information backflow in disordered spin chains
Sudipto Singha Roy, Utkarsh Mishra, Debraj Rakshit
We investigate the trends of information backflow associated with the dynamics of a sub-part of a disordered spin-1/2 transverse field Heisenberg chain for different regimes of the…
Disordered Kitaev chain with long-range pairing: Loschmidt echo revivals and dynamical phase transitions
Utkarsh Mishra, R. Jafari, Alireza Akbari
We explore the dynamics of long-range Kitaev chain by varying pairing interaction exponent, . It is well known that distinctive characteristics on the nonequilibrium dynamics of…
Dynamical quantum correlations after sudden quenches
Utkarsh Mishra, Hadi Cheraghi, Saeed Mahdavifar +2
We employ the mean-field approach in the fermionic picture of the spin-1/2 XXZ chain to investigate the dynamics of bipartite quantum discord and concurrence under sudden quenching…
Quantum correlations in periodically driven spin chains: Revivals and steady-state properties
Utkarsh Mishra, R. Prabhu, Debraj Rakshit
We study the dynamics of microscopic quantum correlations, viz., bipartite entanglement and quantum discord between nearest neighbor sites, in Ising spin chain with a periodically…
Benford analysis of quantum critical phenomena: First digit provides high finite-size scaling exponent while first two and further are not much better
Anindita Bera, Utkarsh Mishra, Sudipto Singha Roy +3
Benford's law is an empirical edict stating that the lower digits appear more often than higher ones as the first few significant digits in statistics of natural phenomena and math…
Survival of time-evolved correlations depends on whether quenching is across critical point in XY spin chain
Utkarsh Mishra, Debraj Rakshit, R. Prabhu
The time-dynamics of quantum correlations in the quantum transverse anisotropic XY spin chain of infinite length is studied at zero as well as finite temperatures. The evolution oc…
Time dynamics of multiparty quantum correlations indicate energy transfer route in light-harvesting complexes
Titas Chanda, Utkarsh Mishra, Aditi Sen De +1
The time-evolution of multiparty quantum correlations as quantified by monogamy scores and bipartition collections of quantum correlations is investigated for light-harvesting comp…
Constructive Interference Between Disordered Couplings Enhances Multiparty Entanglement in Quantum Heisenberg Spin Glass Models
Utkarsh Mishra, Debraj Rakshit, R. Prabhu +2
Disordered systems form one of the centrestages of research in many body sciences and lead to a plethora of interesting phenomena and applications. A paradigmatic disordered system…
Benford's law gives better scale exponents in phase transitions of quantum XY models
Ameya Deepak Rane, Utkarsh Mishra, Anindya Biswas +2
Benford's law is an empirical law predicting the distribution of the first significant digits of numbers obtained from natural phenomena and mathematical tables. It has been found…
Enhancing robustness of multiparty quantum correlations using weak measurement
Uttam Singh, Utkarsh Mishra, Himadri Shekhar Dhar
Multipartite quantum correlations are important resources for the development of quantum information and computation protocols. However, the resourcefulness of multipartite quantum…
Local Decoherence-free Macroscopic Quantum states
Utkarsh Mishra, Aditi Sen De, Ujjwal Sen
We identify a class of quantum states, each consisting of a microscopic and a macroscopic section, that are effectively decoherence-free when each particle is locally passed throug…
Tuning interaction strength leads to ergodic-nonergodic transition of quantum correlations in anisotropic Heisenberg spin model
Utkarsh Mishra, R. Prabhu, Aditi Sen De +1
We investigate the time dynamics of quantum correlations of the anisotropic Heisenberg model in a time-dependent magnetic field, in one-dimensional, ladder, and two-dimensional lat…
Macroscopic Schrödinger Cat Resistant to Particle Loss and Local Decoherence
Utkarsh Mishra, Aditi Sen De, Ujjwal Sen
The Schrödinger cat state plays a crucial role in quantum theory, and has important fundamental as well as technological implications, ranging from quantum measurement theory to qu…