Quantum trajectories and open many-body quantum systems

AJ Daley - Advances in Physics, 2014 - Taylor & Francis
The study of open quantum systems–microscopic systems exhibiting quantum coherence
that are coupled to their environment–has become increasingly important in the past years …

Keldysh field theory for driven open quantum systems

LM Sieberer, M Buchhold, S Diehl - Reports on Progress in …, 2016 - iopscience.iop.org
Recent experimental developments in diverse areas—ranging from cold atomic gases to
light-driven semiconductors to microcavity arrays—move systems into the focus which are …

Nonequilibrium boundary-driven quantum systems: Models, methods, and properties

GT Landi, D Poletti, G Schaller - Reviews of Modern Physics, 2022 - APS
Recent years have seen tremendous progress in the theoretical understanding of quantum
systems driven dissipatively by coupling to different baths at their edges. This was possible …

Measurement-induced dark state phase transitions in long-ranged fermion systems

T Müller, S Diehl, M Buchhold - Physical Review Letters, 2022 - APS
We identify an unconventional algebraic scaling phase in the quantum dynamics of long-
range hop**, free fermions, which are exposed to continuous local measurements. The …

Controlling the dynamics of an open many-body quantum system with localized dissipation

G Barontini, R Labouvie, F Stubenrauch, A Vogler… - Physical review …, 2013 - APS
We experimentally investigate the action of a localized dissipative potential on a
macroscopic matter wave, which we implement by shining an electron beam on an atomic …

Monitored open fermion dynamics: Exploring the interplay of measurement, decoherence, and free Hamiltonian evolution

B Ladewig, S Diehl, M Buchhold - Physical Review Research, 2022 - APS
The interplay of unitary evolution and local measurements in many-body systems gives rise
to a stochastic state evolution and to measurement-induced phase transitions in the pure …

Algebraic versus exponential decoherence in dissipative many-particle systems

Z Cai, T Barthel - Physical review letters, 2013 - APS
The interplay between dissipation and internal interactions in quantum many-body systems
gives rise to a wealth of novel phenomena. Here we investigate spin-1/2 chains with uniform …

Revealing measurement-induced phase transitions by pre-selection

M Buchhold, T Mueller, S Diehl - arxiv preprint arxiv:2208.10506, 2022 - arxiv.org
Pushing forward the understanding of general non-unitary dynamics in controlled quantum
platforms has been fueled by the recent discovery of measurement-induced phases and …

Anomalous decay of coherence in a dissipative many-body system

R Bouganne, M Bosch Aguilera, A Ghermaoui… - Nature Physics, 2020 - nature.com
Decoherence plays a major role in our current understanding of the conceptual foundations
of quantum physics. In many instances, decoherence is also a threat that must be countered …

[HTML][HTML] Dissipative Floquet dynamics: From steady state to measurement induced criticality in trapped-ion chains

P Sierant, G Chiriacò, FM Surace, S Sharma… - Quantum, 2022 - quantum-journal.org
Quantum systems evolving unitarily and subject to quantum measurements exhibit various
types of non-equilibrium phase transitions, arising from the competition between unitary …