Tunable Aharonov-Bohm cages through imaginary couplings

SM Zhang, HS Xu, L ** - Physical Review A, 2023 - APS
The Aharonov-Bohm (AB) cage enables localized confinement with nondiffractive
propagation for arbitrary excitation. In this study, we introduce an anti-parity-time (anti-PT) …

Beating the standard quantum limit for binary phase-shift-keying discrimination with a realistic hybrid feed-forward receiver

MN Notarnicola, S Olivares - Physical Review A, 2023 - APS
We propose a hybrid feed-forward receiver (HFFRE) for the discrimination of binary phase-
shift-keyed coherent states based on the appropriate combination of a displacement feed …

Effects of Peierls phases in open linear chains

AM Marques - Physical Review B, 2024 - APS
The introduction of Peierls phases in open tight-binding chains without closed paths in either
real or synthetic dimensions is understood to be physically inconsequential, as one …

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 …

Entanglement of edge modes in (very) strongly correlated topological insulators

N Ara, R Basu, E Mathew… - Journal of Physics …, 2024 - iopscience.iop.org
Identifying topological phases for a strongly correlated theory remains a non-trivial task, as
defining order parameters, such as Berry phases, is not straightforward. Quantum …

Brane order and quantum magnetism in modulated anisotropic ladders

T Pandey, GY Chitov - Physical Review B, 2022 - APS
Two-leg spin-1/2 ladders with anisotropy and two different dimerization patterns are
analyzed at zero temperature. This model is equivalent to a modulated interacting (Kitaev) …

Flat Bands and Compact Localised States: A Carrollian roadmap

N Ara, A Banerjee, R Basu, B Krishnan - arxiv preprint arxiv:2412.18965, 2024 - arxiv.org
We show how Carrollian symmetries become important in the construction of one-
dimensional fermionic systems with all flat-band spectra from first principles. The key …

Fractional Wannier Orbitals and Tight-Binding Gauge Fields for Kitaev Honeycomb Superlattices with Flat Majorana Bands

KB Yogendra, G Baskaran, T Das - arxiv preprint arxiv:2407.12559, 2024 - arxiv.org
Fractional excitations offer vast potential for both fundamental physics and quantum
technologies. However, their dynamics under the influence of gauge fields pose a significant …

Thermodynamic signature of topological quantum phase transition in a two-leg Kitaev ladder

LJ Ding, YX **ang - Physica A: Statistical Mechanics and its Applications, 2023 - Elsevier
We study the topological quantum phase transitions (QPTs) and quantum criticality of a two-
leg Kitaev ladder. In the absence of superconducting phase difference, the thermal Drude …

Entanglement entropy in multi-leg Kitaev ladders with interface defects

DE Almeida - Journal of Statistical Mechanics: Theory and …, 2021 - iopscience.iop.org
The entanglement of different parts of a quantum system is expected to be proportional to
the common interface area. Therefore alterations across the interface will lead to changes …