Nonlinear sigma models for monitored dynamics of free fermions
We derive field theory descriptions for measurement-induced phase transitions in free
fermion systems. We focus on a multiflavor Majorana chain, undergoing Hamiltonian …
fermion systems. We focus on a multiflavor Majorana chain, undergoing Hamiltonian …
Measurement-induced criticality in extended and long-range unitary circuits
We explore the dynamical phases of unitary Clifford circuits with variable-range interactions,
coupled to a monitoring environment. We investigate two classes of models, distinguished …
coupled to a monitoring environment. We investigate two classes of models, distinguished …
Quantum entanglement in the Sachdev—Ye—Kitaev model and its generalizations
P Zhang - Frontiers of Physics, 2022 - Springer
Entanglement is one of the most important concepts in quantum physics. We review recent
progress in understanding the quantum entanglement in many-body systems using large-N …
progress in understanding the quantum entanglement in many-body systems using large-N …
Transitions in the learnability of global charges from local measurements
We consider monitored quantum systems with a global conserved charge, and ask how
efficiently an observer (“eavesdropper”) can learn the global charge of such systems from …
efficiently an observer (“eavesdropper”) can learn the global charge of such systems from …
Charge fluctuation and charge-resolved entanglement in a monitored quantum circuit with symmetry
We study a (1+ 1)-dimensional quantum circuit consisting of Haar-random unitary gates and
projective measurements, both of which conserve a total U (1) charge and thus have U (1) …
projective measurements, both of which conserve a total U (1) charge and thus have U (1) …
Entanglement structure and information protection in noisy hybrid quantum circuits
In the context of measurement-induced entanglement phase transitions, the influence of
quantum noises, which are inherent in real physical systems, is of great importance and …
quantum noises, which are inherent in real physical systems, is of great importance and …
Universal Kardar-Parisi-Zhang scaling in noisy hybrid quantum circuits
Measurement-induced phase transitions (MIPTs) have attracted increasing attention due to
the rich phenomenology of entanglement structures and their relation with quantum …
the rich phenomenology of entanglement structures and their relation with quantum …
Noise-induced phase transitions in hybrid quantum circuits
The presence of quantum noises inherent to real physical systems can strongly impact the
physics in hybrid quantum circuits with local random unitaries and midcircuit measurements …
physics in hybrid quantum circuits with local random unitaries and midcircuit measurements …
[HTML][HTML] Dissipative Floquet dynamics: From steady state to measurement induced criticality in trapped-ion chains
Quantum systems evolving unitarily and subject to quantum measurements exhibit various
types of non-equilibrium phase transitions, arising from the competition between unitary …
types of non-equilibrium phase transitions, arising from the competition between unitary …
Universal properties of the spectral form factor in open quantum systems
The spectral form factor (SFF) can probe the eigenvalue statistic at different energy scales as
its time variable varies. In closed quantum chaotic systems, the SFF exhibits a universal dip …
its time variable varies. In closed quantum chaotic systems, the SFF exhibits a universal dip …