Universality in driven open quantum matter

LM Sieberer, M Buchhold, J Marino, S Diehl - arXiv preprint arXiv …, 2023 - arxiv.org
Universality is a powerful concept, which enables making qualitative and quantitative
predictions in systems with extensively many degrees of freedom. It finds realizations in …

Nonlinear transport in the presence of a local dissipation

AM Visuri, T Giamarchi, C Kollath - Physical Review Research, 2023 - APS
We characterize the particle transport, particle loss, and nonequilibrium steady states in a
dissipative one-dimensional lattice connected to reservoirs at both ends. The free-fermion …

Irreversible entropy transport enhanced by fermionic superfluidity

P Fabritius, J Mohan, M Talebi, S Wili, W Zwerger… - Nature Physics, 2024 - nature.com
The nature of particle and entropy flow between two superfluids is often understood in terms
of reversible flow carried by an entropy-free, macroscopic wavefunction. While this …

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 …

Suppression of nonequilibrium quasiparticle transport in flat-band superconductors

VAJ Pyykkönen, S Peotta, P Törmä - Physical Review Letters, 2023 - APS
We study nonequilibrium transport through a superconducting flat-band lattice in a two-
terminal setup with the Schwinger-Keldysh method. We find that quasiparticle transport is …

Transport and nonreciprocity in monitored quantum devices: an exact study

J Ferreira, T Jin, J Mannhart, T Giamarchi… - Physical Review Letters, 2024 - APS
We study noninteracting fermionic systems undergoing continuous monitoring and driven by
biased reservoirs. Averaging over the measurement outcomes, we derive exact formulas for …

Orthogonality catastrophe beyond bosonization from post-selection

M Stefanini, J Marino - Physical Review Research, 2024 - APS
We show that the dynamics induced by post-selected measurements can serve as a
controlled route to access physical processes beyond the boundaries of Luttinger liquid …

Modeling particle loss in open systems using Keldysh path integral and second order cumulant expansion

CH Huang, T Giamarchi, MA Cazalilla - Physical Review Research, 2023 - APS
For open quantum systems, integration of the bath degrees of freedom using the second
order cumulant expansion in the Keldysh path integral provides an alternative derivation of …

DC transport in a dissipative superconducting quantum point contact

AM Visuri, J Mohan, S Uchino, MZ Huang… - Physical Review …, 2023 - APS
We study the current-voltage characteristics of a superconducting junction with particle
losses at the contacts. We adopt the Keldysh formalism to compute the steady-state current …

Diagrammatic Monte Carlo for dissipative quantum impurity models

M Vanhoecke, M Schirò - Physical Review B, 2024 - APS
We develop a diagrammatic Monte Carlo method for the real-time dynamics of dissipative
quantum impurity models. These are small open quantum systems with interaction and local …