Related Experiment Video
Updated: Jan 12, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Dissipative Phase Transition in the Two-Photon Dicke Model
Aanal Jayesh Shah1, Peter Kirton2, Simone Felicetti3,4
1Purdue University, Department of Physics and Astronomy, West Lafayette, Indiana 47906, USA.
None:
We explore the dissipative phase transition of the two-photon Dicke model, a topic that has garnered significant attention recently. Our analysis reveals that while single-photon loss does not stabilize the intrinsic instability in the model, the inclusion of two-photon loss restores stability, leading to the emergence of superradiant states, which coexist with the normal vacuum states. Using a second-order cumulant expansion for the photons, we derive an analytical description of the system in the thermodynamic limit, which agrees well with the exact calculation results. Additionally, we present the Wigner function for the system, shedding light on the breaking of the Z_{4} symmetry inherent in the model. These findings offer valuable insights into stabilization mechanisms in open quantum systems and pave the way for exploring complex nonlinear dynamics in two-photon Dicke models.
Related Concept Videos
Deactivation Processes: Jablonski Diagram
Phase Transitions: Melting and Freezing
Phase Transitions: Vaporization and Condensation
Phase Transitions: Sublimation and Deposition
Phase Transitions
The de Broglie Wavelength

