First order phase transition between two centro-symmetric superradiant crystals
Abstract
We observe a structural phase transition between two configurations of a superradiant crystal by coupling a Bose-Einstein condensate to an optical cavity and applying imbalanced transverse pump fields. The transition can be interpreted as a transition between two nonpolar, centro-symmetric structures involving a change in polarization. We find that this first order phase transition is accompanied by transient dynamics of the order parameter which we measure in real time. The phase transition and the excitation spectrum can be derived from a microscopic Hamiltonian, in quantitative agreement with our experimental data. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000473380Publication status
publishedJournal / series
Physical Review ResearchVolume
Pages / Article No.
Publisher
American Physical Society (APS)Organisational unit
03599 - Esslinger, Tilman / Esslinger, Tilman
Funding
182650 - Interplay between Topology, Interactions and Dissipation in Driven Quantum Many-Body Systems (SNF)
175329 - Non-equilibrium dynamics in Atomic systems for QUAntum Simulation (SNF)
742579 - Mass, heat and spin transport in interlinked quantum gases (EC)
721465 - Collective effects and optomechanics in ultra-cold matter (EC)
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Is supplemented by: https://doi.org/10.3929/ethz-b-000473447
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