Entanglement dynamics in monitored systems and the role of quantum jumps

Y Le Gal, X Turkeshi, M Schirò - PRX Quantum, 2024 - APS
Monitored quantum many-body systems display a rich pattern of entanglement dynamics,
which is unique to this nonunitary setting. This work studies the effect of quantum jumps on …

Monitored fermions with conserved charge

M Fava, L Piroli, D Bernard, A Nahum - Physical Review Research, 2024 - APS
We study measurement-induced phases of free fermion systems with U (1) symmetry.
Following a recent approach developed for Majorana chains, we derive a field theory …

Enhanced entanglement in the measurement-altered quantum Ising chain

A Paviglianiti, X Turkeshi, M Schirò, A Silva - Quantum, 2024 - quantum-journal.org
Understanding the influence of measurements on the properties of many-body systems is a
fundamental problem in quantum mechanics and for quantum technologies. This paper …

Entanglement Transition due to particle losses in a monitored fermionic chain

RD Soares, YL Gal, M Schirò - arXiv preprint arXiv:2408.03700, 2024 - arxiv.org
Recently, there has been interest in the dynamics of monitored quantum systems using
linear jump operators related to the creation or annihilation of particles. Here we study the …

Measurement-induced phase transitions in monitored infinite-range interacting systems

A Delmonte, Z Li, G Passarelli, EY Song… - arXiv preprint arXiv …, 2024 - arxiv.org
A key challenge in observing measurement-induced phase transitions is the mitigation of the
post-selection barrier, which causes the reproducibility of specific sequences of …

Breakdown of Measurement-Induced Phase Transitions Under Information Loss

A Paviglianiti, G Di Fresco, A Silva, B Spagnolo… - arXiv preprint arXiv …, 2024 - arxiv.org
The dynamics of a quantum-many body system subject to measurements is naturally
described by an ensemble of quantum trajectories, which can feature measurement-induced …

Entanglement enhancement induced by noise in inhomogeneously monitored systems

C Muzzi, M Tsitsishvili, G Chiriacò - arXiv preprint arXiv:2410.06712, 2024 - arxiv.org
We study how stronger noise can enhance the entanglement in inhomogeneously
monitored quantum systems. We consider a free fermions model composed of two coupled …