Dynamical purification phase transition induced by quantum measurements

MJ Gullans, DA Huse - Physical Review X, 2020 - APS
Continuously monitoring the environment of a quantum many-body system reduces the
entropy of (purifies) the reduced density matrix of the system, conditional on the outcomes of …

Effective theory for the measurement-induced phase transition of Dirac fermions

M Buchhold, Y Minoguchi, A Altland, S Diehl - Physical Review X, 2021 - APS
A wave function subject to unitary time evolution and exposed to measurements undergoes
pure state dynamics, with deterministic unitary and probabilistic measurement-induced state …

Entanglement transition in a monitored free-fermion chain: From extended criticality to area law

O Alberton, M Buchhold, S Diehl - Physical Review Letters, 2021 - APS
We analyze the quantum trajectory dynamics of free fermions subject to continuous
monitoring. For weak monitoring, we identify a novel dynamical regime of subextensive …

Theory of free fermions under random projective measurements

I Poboiko, P Pöpperl, IV Gornyi, AD Mirlin - Physical Review X, 2023 - APS
We develop an analytical approach to the study of one-dimensional free fermions subject to
random projective measurements of local site occupation numbers, based on the Keldysh …

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 hopping, free fermions, which are exposed to continuous local measurements. The …

Measurement-protected quantum phases

S Sang, TH Hsieh - Physical Review Research, 2021 - APS
We introduce a class of hybrid quantum circuits, with random unitaries and projective
measurements, which host long-range order in the area-law entanglement phase of the …

Measurement-induced criticality in -dimensional hybrid quantum circuits

X Turkeshi, R Fazio, M Dalmonte - Physical Review B, 2020 - APS
We investigate the dynamics of two-dimensional quantum spin systems under the combined
effect of random unitary gates and local projective measurements. When considering steady …

Controlling entanglement at absorbing state phase transitions in random circuits

P Sierant, X Turkeshi - Physical Review Letters, 2023 - APS
Many-body unitary dynamics interspersed with repeated measurements display a rich
phenomenology hallmarked by measurement-induced phase transitions. Employing …

Spacetime duality between localization transitions and measurement-induced transitions

TC Lu, T Grover - PRX Quantum, 2021 - APS
Time evolution of quantum many-body systems typically leads to a state with maximal
entanglement allowed by symmetries. Two distinct routes to impede entanglement growth …

Measurement-induced quantum criticality under continuous monitoring

Y Fuji, Y Ashida - Physical Review B, 2020 - APS
We investigate entanglement phase transitions from volume-law to area-law entanglement
in a quantum many-body state under continuous position measurement on the basis of the …