Condensate formation in a dark state of a driven atom-cavity system

Abstract

We demonstrate condensate formation in a dark state in an ultracold quantum gas coupled to a high-finesse cavity and pumped by a shaken optical lattice. We show experimentally and theoretically that the atoms in the dark state display a strong suppression of the coupling to the cavity. On the theory side, this is supported by solving the dynamics of a minimal three-level model and of the full atom-cavity system. The symmetry of the condensate wave function is anti-symmetric with respect to the potential minima of the pump lattice, and displays a staggered sign along the cavity direction. This symmetry decouples the dark state from the cavity, and is preserved when the pump intensity is switched off.

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Cited by in corpus (9)

• Realizing limit cycles in dissipative bosonic systems
• Equilibrium Parametric Amplification in Raman-Cavity Hybrids
• Theoretical Exploration of Phase Transitions in a Cavity-BEC System with Two Crossed Optical Pumps
• Dark-state engineering in Fock-state lattices
• Dynamics of spin-momentum entanglement from superradiant phase transitions
• Gain engineering and atom lasing in a topological edge state in synthetic dimensions
• Moiré Superradiance in Cavity Quantum Electrodynamics with Quantum Atom Gas
• Robustness of the Floquet-assisted superradiant phase and possible laser operation
• Dynamics and fragmentation of bosons in an optical lattice inside a cavity using Wannier and position bases