Observation of a Dissipative Time Crystal.
- H. Keßler, Phatthamon Kongkhambut, Christoph Georges, L. Mathey, Jayson G. Cosme, A. Hemmerich
- PhysicsPhysical Review Letters
- 16 December 2020
The first experimental realization of a time crystal stabilized by dissipation is presented, demonstrating the robustness of this dynamical phase against system parameter changes and temporal perturbations of the driving.
From a continuous to a discrete time crystal in a dissipative atom-cavity system
- H. Keßler, Jayson G. Cosme, Christoph Georges, L. Mathey, A. Hemmerich
- PhysicsNew Journal of Physics
- 30 April 2020
We propose the dynamical stabilization of a nonequilibrium order in a driven dissipative system comprised an atomic Bose–Einstein condensate inside a high finesse optical cavity, pumped with an…
Center-of-mass motion as a sensitive convergence test for variational multimode quantum dynamics
- Jayson G. Cosme, C. Weiss, J. Brand
- Physics
- 27 October 2015
Multimode expansions in computational quantum dynamics promise convergence toward exact results upon increasing the number of modes. Convergence is difficult to ascertain in practice due to the…
Emergent limit cycles and time crystal dynamics in an atom-cavity system
- H. Keßler, Jayson G. Cosme, M. Hemmerling, L. Mathey, A. Hemmerich
- PhysicsPhysical Review A
- 7 May 2019
We propose an experimental realization of a time crystal using an atomic Bose-Einstein condensate in a high finesse optical cavity pumped with laser light detuned to the blue side of the relevant…
Time crystals in a shaken atom-cavity system
- Jayson G. Cosme, Jim Skulte, L. Mathey
- PhysicsPhysical Review A
- 31 August 2019
We demonstrate the emergence of a time crystal of atoms in a high-finesse optical cavity driven by a phase-modulated transverse pump field, resulting in a shaken lattice. This shaken system exhibits…
Dynamical Control of Order in a Cavity-BEC System.
- Jayson G. Cosme, Christoph Georges, A. Hemmerich, L. Mathey
- PhysicsPhysical Review Letters
- 27 June 2018
Dynamical control of the superradiant transition of cavity-BEC system via periodic driving of the pump laser is demonstrated, and it is shown that additional, nonequilibrium density wave orders, which do not exist in equilibrium, can be stabilized dynamically.
Interaction blockade for bosons in an asymmetric double well
- Jayson G. Cosme, M. Andersen, J. Brand
- Physics
- 21 April 2017
The interaction blockade phenomenon isolates the motion of a single quantum particle within a multi-particle system, in particular for coherent oscillations in and out of a region affected by the…
Light-Induced Coherence in an Atom-Cavity System.
- Christoph Georges, Jayson G. Cosme, L. Mathey, A. Hemmerich
- PhysicsPhysical Review Letters
- 6 July 2018
It is shown that the light- induced temporal modulation of the pump wave can suppress this DW order and restore coherence, establishing a foundational principle of dynamical control of competing orders analogous to a hypothesized mechanism for light-induced superconductivity in high-T_{c} cuprates.
Observation of a continuous time crystal
- Phatthamon Kongkhambut, Jim Skulte, L. Mathey, Jayson G. Cosme, A. Hemmerich, H. Keßler
- PhysicsScience
- 14 February 2022
Time crystals are classified as discrete or continuous depending on whether they spontaneously break discrete or continuous time translation symmetry. Although discrete time crystals have been…
Higgs time crystal in a high- Tc superconductor
- Guido Homann, Jayson G. Cosme, L. Mathey
- PhysicsPhysical Review Research
- 28 April 2020
We propose to induce a time crystalline state in a high-$T_c$ superconductor, by optically driving a sum resonance of the Higgs mode and a Josephson plasma mode. The generic cubic process that…
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