Emerging phases in strongly coupled driven-dissipative photon gases (B06)

• Subject Area: Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
• Term: since 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 277625399

With a new microstructuring method we will prepare and analyze theoretically 1d and 2d lattices of coupled photon condensates in view of novel phases. In a 1d chain we expect for incoherent hopping in a tilted lattice to observe a zigzag-like density pattern. For 2d lattices with hundreds of sites we will explore the phase diagram for spiral vortices, which are predicted due to the interplay of tunnel coupling and loss rate. And based on the tunability of pump and loss in those photonic systems we will realize condensates with Berezinskii-Kosterlitz-Thouless and Kardar-Parisi-Zhang spatio-temporal correlations.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 185: Open System Control of Atomic and Photonic Matter (OSCAR)
• Major Instrumentation: Andor intensified CMOS camera
• Applicant Institution: Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau
• Project Heads: Professor Dr. Georg von Freymann; Privatdozent Dr. Axel Pelster; Dr. Frank Vewinger