212 citations · 468 across the 15 of their papers we have counts for
15 papers
Torus bifurcation of a dissipative time crystal
Jayson G. Cosme, Phatthamon Kongkhambut, Anton Bölian +5
Using a quantum gas setup consisting of a Bose-Einstein condensate strongly coupled to a high-finesse optical cavity by a transverse pump laser, we experimentally observe an instab…
Hybridization of the amplitude mode in a confined fermionic superfluid
Cesar R. Cabrera, René Henke, Lukas Broers +5
In phase transitions, spontaneous symmetry breaking results in a non-zero order parameter and two collective excitations: the Goldstone and the amplitude mode. These modes, which d…
Observation of a phase transition from a continuous to a discrete time crystal
Phatthamon Kongkhambut, Jayson G. Cosme, Jim Skulte +4
Discrete (DTCs) and continuous time crystals (CTCs) are novel dynamical many-body states, that are characterized by robust self-sustained oscillations, emerging via spontaneous bre…
Realizing limit cycles in dissipative bosonic systems
Jim Skulte, Phatthamon Kongkhambut, Hans Keßler +3
We propose a general mechanism for generating limit cycle (LC) oscillations by coupling a linear bosonic mode to a dissipative nonlinear bosonic mode. By analyzing the stability ma…
Equilibrium Parametric Amplification in Raman-Cavity Hybrids
H. P. Ojeda Collado, Marios H. Michael, Jim Skulte +2
Parametric resonances and amplification have led to extraordinary photoinduced phenomena in pump-probe experiments. While these phenomena manifest themselves in out-of-equilibrium…
Quantum rotation sensor with real-time readout based on an atom-cavity system
Jim Skulte, Jayson G. Cosme, Ludwig Mathey
Using an atom-cavity platform, we propose to combine the effective gauge phase of rotated neutral atoms and the superradiant phase transition to build a highly sensitive and fast q…
Bridging closed and dissipative discrete time crystals in spin systems with infinite-range interactions
Jayson G. Cosme, Jim Skulte, Ludwig Mathey
We elucidate the role that the dissipation in a bosonic channel plays in the prevalence and stability of time crystals (TCs) in a periodically driven spin-boson system described by…
Condensate formation in a dark state of a driven atom-cavity system
Jim Skulte, Phatthamon Kongkhambut, Sahana Rao +4
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…
Dissipative time crystal in an atom-cavity system: Influence of trap and competing interactions
Richelle Jade L. Tuquero, Jim Skulte, Ludwig Mathey +1
While the recently realized dissipative time crystal in a laser-pumped atom-cavity system in the experiment of Keßler et al. [Phys. Rev. Lett. 127, 043602 (2021)] is qualitatively…
Observation of a continuous time crystal
Phatthamon Kongkhambut, Jim Skulte, Ludwig Mathey +3
Time crystals are classified as discrete or continuous depending on whether they spontaneously break discrete or continuous time translation symmetry. While discrete time crystals…
Realization of a periodically driven open three-level Dicke model
Phatthamon Kongkhambut, Hans Keßler, Jim Skulte +3
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 emerge…
Parametrically driven-dissipative three-level Dicke model
Jim Skulte, Phatthamon Kongkhambut, Hans Keßler +3
We investigate the three-level Dicke model, which describes a fundamental class of light-matter systems. We determine the phase diagram in the presence of dissipation, which we ass…
Vortex and soliton dynamics in particle-hole symmetric superfluids
Jim Skulte, Lukas Broers, Jayson G. Cosme +1
We propose to induce topological defects in particle-hole symmetric superfluids, with the prime example of the BCS state of ultracold atoms and detect their time evolution and deca…
An invitation to the principal series
Tarek Anous, Jim Skulte
Scalar unitary representations of the isometry group of -dimensional de Sitter space are labeled by their conformal weights . A salient feature of de Sitter space i…
Time crystals in a shaken atom-cavity system
Jayson G. Cosme, Jim Skulte, Ludwig Mathey
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 shak…