no code implementations • 9 Mar 2021 • Fabrizio Minganti, Ievgen I. Arkhipov, Adam Miranowicz, Franco Nori
Despite the nonequilibrium nature of the laser, the Landau theory of thermal phase transitions, applied directly to the Scully-Lamb laser model (SLLM), indicates that the laser threshold is a second-order phase transition, associated with a $U(1)$ spontaneous symmetry breaking (SSB).
Quantum Physics Statistical Mechanics
no code implementations • 26 Feb 2021 • Ievgen I. Arkhipov, Fabrizio Minganti, Adam Miranowicz, Franco Nori
Here, by considering the full quantum dynamics of a quadratic Liouvillian superoperator, we introduce a simple and effective method for engineering NHHs with high-order quantum EPs, derived from evolution matrices of system operators moments.
Quantum Physics
