Crossover from discontinuous to continuous phase transition in a dissipative spin system with collective decay

L Song, J Jin - Physical Review B, 2023 - APS
We investigate the steady-state phase transitions in an all-to-all transverse-field Ising model
subjected to an environment. The considered model is composed of two ingredient …

Many-body open quantum systems

R Fazio, J Keeling, L Mazza, M Schiro - arXiv preprint arXiv:2409.10300, 2024 - arxiv.org
These Lecture Notes discuss the recent theoretical advances in the understanding of open
quantum many-body physics in platforms where both dissipative and coherent processes …

Realistic simulations of spin squeezing and cooperative coupling effects in large ensembles of interacting two-level systems

J Huber, AM Rey, P Rabl - Physical Review A, 2022 - APS
We describe an efficient numerical method for simulating the dynamics of interacting spin
ensembles in the presence of dephasing and decay. The method builds on the discrete …

Driven-dissipative criticality within the discrete truncated Wigner approximation

VP Singh, H Weimer - Physical Review Letters, 2022 - APS
We present an approach to the numerical simulation of open quantum many-body systems
based on the semiclassical framework of the discrete truncated Wigner approximation. We …

Measurement-induced multipartite-entanglement regimes in collective spin systems

PM Poggi, MH Muñoz-Arias - Quantum, 2024 - quantum-journal.org
We study the competing effects of collective generalized measurements and interaction-
induced scrambling in the dynamics of an ensemble of spin-1/2 particles at the level of …

The bosonic skin effect: Boundary condensation in asymmetric transport

L Garbe, Y Minoguchi, J Huber, P Rabl - SciPost Physics, 2024 - scipost.org
We study the incoherent transport of bosonic particles through a one dimensional lattice with
different left and right hopping rates, as modelled by the asymmetric simple inclusion …

Quantum entangled states of a classically radiating macroscopic spin

O Somech, E Shahmoon - PRX Quantum, 2024 - APS
Entanglement constitutes a main feature that distinguishes quantum from classical physics.
Here, however, we show that entanglement may also serve as the essential ingredient for …

Hybrid discrete-continuous truncated Wigner approximation for driven, dissipative spin systems

CD Mink, D Petrosyan, M Fleischhauer - Physical Review Research, 2022 - APS
We present a systematic approach for the semiclassical treatment of many-body dynamics of
interacting, open spin systems. Our approach overcomes some of the shortcomings of the …

[HTML][HTML] Open quantum dynamics with variational non-Gaussian states and the truncated Wigner approximation

LJ Bond, B Gerritsen, J Minář, JT Young… - The Journal of …, 2024 - pubs.aip.org
We present a framework for simulating the open dynamics of spin–boson systems by
combining variational non-Gaussian states with a quantum trajectories approach. We apply …

Effects of retardation on many-body superradiance in chiral waveguide QED

B Windt, M Bello, D Malz, JI Cirac - arXiv preprint arXiv:2408.03390, 2024 - arxiv.org
We study the superradiant decay of a chain of atoms coupled to a chiral waveguide,
focusing on the regime of non-negligible photon propagation time. Using an exact master …