15 citations · 34 across the 15 of their papers we have counts for
17 papers
Single and coupled quantum van der Pol oscillators: Wigner-function dynamics, exact qutrit solutions, and synchronization
Rohitashwa Chattopadhyay, Vinayak Pendse, Shamik Gupta
We study quantum van der Pol oscillator in which single-photon pumping competes with a nonlinear two-photon dissipative channel to produce a quantum limit cycle, and the question o…
Discrete-time Kuramoto model with phase lag: Linear stability analysis and onset of synchronization
Prashant M. Gade, Shamik Gupta
We investigate the discrete-time version of the Kuramoto model with phase lag, which comprises globally-coupled phase oscillators of distributed frequencies that are evolving under…
Phase transitions in first-detection statistics of monitored long-range quantum walks
Sayan Roy, Shamik Gupta, Giovanna Morigi +1
In a quantum walk, the first-detection return probability (FDRP) characterizes salient features, determining whether the quantum walk is transient or recurrent. We study the FDRP o…
Stability of Collective Neutrino Oscillations -- A Distributional Approach
Rupak Majumder, Dwaipayan Mukherjee, Shamik Gupta +1
We study the stability of collective neutrino oscillations using a distributional approach motivated by the statistical mechanics of Kuramoto synchronization. Treating the ensemble…
Constructing Non-Hermitian Theories with Tunable Exceptional Points and Controlled State Purification
Soumya Kanti Pal, Rupak Majumder, Shamik Gupta
Exceptional points (EP's) are a hallmark of non-Hermitian quantum systems. We show that momentum-space deformation provides a general design principle for creating and controlling…
From Canonical to Tunable Phase Diagrams in Open Quantum Long-Range Systems
Anish Acharya, Shamik Gupta
We investigate the dissipative dynamics of a generalized Lipkin-Meshkov-Glick (LMG) model coupled to a thermal environment. In this generalized model, in addition to the convention…
Analytical approach to subsystem resetting in generalized Kuramoto models
Rupak Majumder, Anish Acharya, Shamik Gupta
Stochastic resetting has emerged as a powerful mechanism for driving systems into nonequilibrium stationary states with tunable properties. While most existing studies focus on glo…
Synchronization with Annealed Disorder and Higher-Harmonic Interactions in Arbitrary Dimensions: When Two Dimensions Are Special
Rupak Majumder, Shamik Gupta
The impact of disorder on collective phenomena depends crucially on whether it is quenched or annealed. In synchronization problems, quenched disorder in higher dimensional Kuramot…
Dynamics and steady states of tight-binding chains in presence of isolated defects
Anish Acharya, Luca Giuggioli, Shamik Gupta
Reduced transport and localization in isolated quantum systems are typically attributed to spatially-extended disorder, but may also emerge from the influence of a few controllable…
Finite-size fluctuations for stochastic coupled oscillators: A general theory
Rupak Majumder, Julien Barré, Shamik Gupta
Phase transitions, sharp in the thermodynamic limit, get smeared in finite systems where macroscopic order-parameter fluctuations dominate. Achieving a coherent and complete theore…
Causality, localization, and universality of monitored quantum walks with long-range hopping
Sayan Roy, Shamik Gupta, Giovanna Morigi
A powerful strategy to accelerate quantum-walk-based search algorithms leverages on resetting protocols, where a detector monitors a target site and the evolution of the walker is…
Stationary-state dynamics of interacting phase oscillators in presence of noise and stochastic resetting
Anish Acharya, Mrinal Sarkar, Shamik Gupta
We explore the impact of global resetting on Kuramoto-type models of coupled limit-cycle oscillators with distributed frequencies both in absence and presence of noise. The dynamic…
Coherence-decoherence interplay in quantum systems due to projective stochastic pulses: The case of Rabi oscillations
Sushanta Dattagupta, Shamik Gupta
The interplay of coherence and decoherence is played out in a three-level quantum system, in which the third level is incoherently coupled to the second one which itself is in cohe…
Manipulating phases in many-body interacting systems with subsystem resetting
Anish Acharya, Rupak Majumder, Shamik Gupta
Stabilizing thermodynamically unstable phases in many-body systems, such as suppressing pathological neuronal synchronization in Parkinson's disease or maintaining magnetic order a…
Asymmetric simple exclusion process on a random comb: Transport properties in the stationary state
Mrinal Sarkar, Shamik Gupta
We address the dynamics of interacting particles on a disordered lattice formed by a random comb. The dynamics comprises that of the asymmetric simple exclusion process, whereby mo…
Synchronization through frequency shuffling
Manaoj Aravind, Vaibhav Pachaulee, Mrinal Sarkar +3
A wide variety of engineered and natural systems are modelled as networks of coupled nonlinear oscillators. In nature, the intrinsic frequencies of these oscillators are not consta…
Kuramoto model subject to subsystem resetting: How resetting a part of the system may synchronize the whole of it
Rupak Majumder, Rohitashwa Chattopadhyay, Shamik Gupta
We introduce and investigate the effects of a new class of stochastic resetting protocol called subsystem resetting, whereby a subset of the system constituents in a many-body inte…