12 papers
Disorder-Induced Enhancement of Fermionic Superradiance
David Pascual Solis, Andrea Legramandi, Soumik Bandyopadhyay +1
Collective light-matter phenomena such as Dicke superradiance are often described as a collection of effective spins coupled homogeneously to a bosonic mode, giving rise to a colle…
Many-body spectral transitions through the lens of the variable-range SYK2 model
Andrea Legramandi, Soumik Bandyopadhyay, Philipp Hauke
The Sachdev-Ye-Kitaev (SYK) model is a cornerstone in the study of quantum chaos and holographic quantum matter. Real-world implementations, however, deviate from the idealized all…
Observable signatures of exceptional points from left-right eigenstate distinction
Leela Ganesh Chandra Lakkaraju, Soumik Bandyopadhyay, Sudipto Singha Roy +1
Non-Hermitian quantum systems exhibit qualitatively distinct physical behavior compared to Hermitian systems, a prime example being spectral singularities known as exceptional poin…
From single-particle to many-body chaos in Yukawa--SYK: theory and a cavity-QED proposal
David Pascual Solis, Alex Windey, Soumik Bandyopadhyay +2
Understanding how quantum systems transition from integrable to fully chaotic behavior remains a central open problem in physics. The Sachdev--Ye--Kitaev (SYK) model provides a par…
Impact of Clifford operations on non-stabilizing power and quantum chaos
Naga Dileep Varikuti, Soumik Bandyopadhyay, Philipp Hauke
Non-stabilizerness, alongside entanglement, is a crucial ingredient for fault-tolerant quantum computation and achieving a genuine quantum advantage. Despite recent progress, a com…
Quantum simulation of the Sachdev-Ye-Kitaev model using time-dependent disorder in optical cavities
Rahel Baumgartner, Pietro Pelliconi, Soumik Bandyopadhyay +5
The Sachdev--Ye--Kitaev (SYK) model is a paradigm for extreme quantum chaos, non-Fermi-liquid behavior, and holographic matter. Yet, the dense random all-to-all interactions that c…