Universal criticality of nonequilibrium quantum phase transition in a driven-dissipative Kerr cavity
Jun-Yi Liu, Lei-Lei Nian, Nengji Zhou, Long Xiong, Jing-Tao Lü, and Bo Zheng
Phys. Rev. A 111, L040201 (2025) - Published 18 April, 2025
The authors investigate the universal criticality of the nonequilibrium quantum phase transition in a single-mode driven-dissipative Kerr cavity. With the scaling theory, the critical point and critical exponents are precisely measured, and the feature characterized by the divergent correlation length is revealed.
Thermodynamic phases in first detected return times of quantum many-body systems
Benjamin Walter, Gabriele Perfetto, and Andrea Gambassi
Phys. Rev. A 111, L040202 (2025) - Published 28 April, 2025
The authors develop an analytical treatment of the probability of first detection of a quantum many-body state under stroboscopic projective measurements. The ensuing analysis is based on a mapping of the many-body quantum first detection probability to the partition function of classical spins and it allows to classify different asymptotic decays of the former in terms of equilibrium thermodynamic phases of the latter.



















