Realization of a Periodically Driven Open Three-Level Dicke Model
Phatthamon Kongkhambut, Hans Keßler, Jim Skulte, Ludwig Mathey, Jayson G. Cosme, Andreas Hemmerich
Abstract
A periodically driven open three-level Dicke model is realized by resonantly shaking the pump field in an atom-cavity system. As an unambiguous signature, we demonstrate the emergence of a dynamical phase, in which the atoms periodically localize between the antinodes of the pump lattice, associated with an oscillating net momentum along the pump axis. We observe this dynamical phase through the periodic switching of the relative phase between the pump and cavity fields at a small fraction of the driving frequency, suggesting that it exhibits a time crystalline character.
Topics & Concepts
PhysicsRealization (probability)Relative phasePhase (matter)Field (mathematics)Momentum (technical analysis)Quantum electrodynamicsOptical pumpingQuantum mechanicsFraction (chemistry)OpticsClassical mechanicsFrequency conversionAmplitudeDynamical system (definition)Cold Atom Physics and Bose-Einstein CondensatesQuantum chaos and dynamical systemsQuantum many-body systems