141 citations · 754 across the 15 of their papers we have counts for
15 papers
Quantum critical behavior of entanglement in lattice bosons with cavity-mediated long-range interactions
Shraddha Sharma, Simon B. Jaeger, Rebecca Kraus +2
We analyze the ground-state entanglement entropy of the extended Bose-Hubbard model with infinite-range interactions. This model describes the low-energy dynamics of ultracold boso…
Measurement-induced criticality in extended and long-range unitary circuits
Shraddha Sharma, Xhek Turkeshi, Rosario Fazio +1
We explore the dynamical phases of unitary Clifford circuits with variable-range interactions, coupled to a monitoring environment. We investigate two classes of models, distinguis…
Dissipative Floquet Dynamics: from Steady State to Measurement Induced Criticality in Trapped-ion Chains
Piotr Sierant, Giuliano Chiriacò, Federica M. Surace +5
Quantum systems evolving unitarily and subject to quantum measurements exhibit various types of non-equilibrium phase transitions, arising from the competition between unitary evol…
Mean-field phase diagram of ultracold atomic gases in cavity quantum electrodynamics
Lukas Himbert, Cecilia Cormick, Rebecca Kraus +2
We investigate the mean-field phase diagram of the Bose-Hubbard model with infinite-range interactions in two dimensions. This model describes ultracold bosonic atoms confined by a…
Tuning the presence of dynamical phase transitions in a generalized spin chain
Uma Divakaran, Shraddha Sharma, Amit Dutta
We study an integrable spin chain with three spin interactions and the staggered field () while the latter is quenched either slowly (in a linear fashion in time () as …
Slow quenches in a quantum Ising chain; dynamical phase transitions and topology
Shraddha Sharma, Uma Divakaran, Anatoli Polkovnikov +1
We study the slow quenching dynamics (characterized by an inverse rate, ) of a one-dimensional transverse Ising chain with nearest neighbor ferromagentic interactions acros…
Quenches and dynamical phase transitions in a non-integrable quantum Ising model
Shraddha Sharma, Sei Suzuki, Amit Dutta
We study quenching dynamics of a one-dimensional transverse Ising chain with nearest neighbor antiferromagentic interactions in the presence of a longitudinal field which renders t…
Asymptotic work statistics of periodically driven Ising chains
Angelo Russomanno, Shraddha Sharma, Amit Dutta +1
We study the work statistics of a periodically-driven integrable closed quantum system, addressing in particular the role played by the presence of a quantum critical point. Taking…
One and two-dimensional quantum models: quenches and the scaling of irreversible entropy
Shraddha Sharma, Amit Dutta
Using the scaling relation of the ground state quantum fidelity, we propose the most generic scaling relations of the irreversible work (the residual energy) of a closed quantum sy…
Loschmidt echo and dynamical fidelity in periodically driven quantum systems
Shraddha Sharma, Angelo Russomanno, Giuseppe E. Santoro +1
We study the dynamical fidelity and the Loschmidt echo , following a periodic driving of the transverse magnetic field of a quantum Ising chain (…
Quench Dynamics of Edge States in 2-D Topological Insulator Ribbons
Aavishkar A. Patel, Shraddha Sharma, Amit Dutta
We study the dynamics of edge states of the two dimensional BHZ Hamiltonian in a ribbon geometry following a sudden quench to the quantum critical point separating the topological…
Role of marginality in quantum fidelity and Loschmidt echo: Dirac points in 2-D
Aavishkar A. Patel, Shraddha Sharma, Amit Dutta
We investigate the effect of marginality on the ground state fidelity and Loschmidt echo. For this purpose, we study the above quantities near the quantum critical point (QCP) of t…
Study of Loschmidt Echo for two-dimensional Kitaev model
Shraddha Sharma, Atanu Rajak
In this paper, we study the Loschmidt Echo (LE) of a two-dimensional Kitaev model residing on a honeycomb lattice which is chosen to be an environment that is coupled globally to a…
Loschmidt echo with a non-equilibrium initial state: early time scaling and enhanced decoherence
Victor Mukherjee, Shraddha Sharma, Amit Dutta
We study the Loschmidt echo (LE) in a central spin model in which a central spin is globally coupled to an environment (E) which is subjected to a small and sudden quench at …
Study of Loschmidt Echo for a qubit coupled to an XY-spin chain environment
Shraddha Sharma, Victor Mukherjee, Amit Dutta
We study the temporal evolution of a central spin-1/2 (qubit) coupled to the environment which is chosen to be a spin-1/2 transverse XY spin chain. We explore the entire phase diag…