Phase transitions of the anisotropic Dicke model

P Das, DS Bhakuni, A Sharma - Physical Review A, 2023 - APS
We systematically analyze the various phase transitions of the anisotropic Dicke model that
is endowed with both rotating and counterrotating light-matter couplings. In addition to the …

Entanglement spectrum and entropy in Floquet topological matter

L Zhou - Physical Review Research, 2022 - APS
Entanglement is one of the most fundamental features of quantum systems. In this work, we
obtain the entanglement spectrum and entropy of Floquet noninteracting fermionic lattice …

Study of counterintuitive transport properties in the Aubry-André-Harper model via entanglement entropy and persistent current

N Roy, A Sharma - Physical Review B, 2019 - APS
The single-particle eigenstates of the Aubry-André-Harper model are known to show a
delocalization-localization transition at a finite strength of the quasiperiodic disorder. In this …

Extended flat band, entanglement, and topological properties in a Creutz ladder

Y Kuno - Physical Review B, 2020 - APS
In this work, we study the entanglement and topological properties of an extended flat-band
Creutz ladder by considering a compacted localized state (CLS). Based on the CLS picture …

[HTML][HTML] Entanglement of free fermions on Hamming graphs

PA Bernard, N Crampé, L Vinet - Nuclear Physics B, 2023 - Elsevier
Free fermions on Hamming graphs H (d, q) are considered and the entanglement entropy for
two types of subsystems is computed. For subsets of vertices that form Hamming subgraphs …

Stability of electric field driven many-body localization in an interacting long-range hop** model

DS Bhakuni, A Sharma - Physical Review B, 2020 - APS
We study the fate of many-body localization (MBL) in the presence of long-range hop**
(∼ 1/r σ) in a system subjected to an electric field (static and time periodic) along with a …

Numerical investigations of the extensive entanglement Hamiltonian in quantum spin ladders

C Li, X Li, YN Zhou - Quantum Frontiers, 2024 - Springer
Entanglement constitutes one of the key concepts in quantum mechanics and serves as an
indispensable tool in the understanding of quantum many-body systems. In this work, we …

Synthetic gauge field and chiral physics on two-leg superconducting circuits

X Guan, Y Feng, ZY Xue, G Chen, S Jia - Physical Review A, 2020 - APS
The gauge field is essential for exploring novel phenomena in modern physics. However, it
has not been realized in the recent breakthrough experiment on two-leg superconducting …

Exploring helical phases of matter in bosonic ladders

A Haller, AS Matsoukas-Roubeas, Y Pan, M Rizzi… - Physical Review …, 2020 - APS
Ladder models of ultracold atoms offer a versatile platform for the experimental and
theoretical study of different phenomena and phases of matter linked to the interplay …

Enhancement of crossed Andreev reflection in a Kitaev ladder connected to normal metal leads

R Nehra, DS Bhakuni, A Sharma… - Journal of Physics …, 2019 - iopscience.iop.org
We study nonlocal transport in a two-leg Kitaev ladder connected to two normal metals. The
coupling between the two legs of the ladder when the legs are maintained at a (large) …