Dynamical topological phase transition in cold Rydberg quantum gases
- URL: http://arxiv.org/abs/2409.11035v1
- Date: Tue, 17 Sep 2024 09:59:36 GMT
- Title: Dynamical topological phase transition in cold Rydberg quantum gases
- Authors: Jun Zhang, Ya-Jun Wang, Bang Liu, Li-Hua Zhang, Zheng-Yuan Zhang, Shi-Yao Shao, Qing Li, Han-Chao Chen, Yu Ma, Tian-Yu Han, Qi-Feng Wang, Jia-Dou Nan, Yi-Ming Yin, Dong-Yang Zhu, Bao-Sen Shi, Dong-Sheng Ding,
- Abstract summary: We report the experimental observation of dynamical topological phase transitions in cold Rydberg atomic gases under a microwave field driving.
At the transition state, where the winding number flips, the topology of these trajectories evolves into more non-trivial structures.
- Score: 23.439762818503013
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Study of phase transitions provide insights into how a many-body system behaves under different conditions, enabling us to understand the symmetry breaking, critical phenomena, and topological properties. Strong long-range interactions in highly excited Rydberg atoms create a versatile platform for exploring exotic emergent topological phases. Here, we report the experimental observation of dynamical topological phase transitions in cold Rydberg atomic gases under a microwave field driving. By measuring the system transmission curves while varying the probe intensity, we observe complex hysteresis trajectories characterized by distinct winding numbers as they cross the critical point. At the transition state, where the winding number flips, the topology of these hysteresis trajectories evolves into more non-trivial structures. The topological trajectories are shown to be robust against noise, confirming their rigidity in dynamic conditions. These findings contribute to the insights of emergence of complex dynamical topological phases in many-body systems.
Related papers
- Probing quantum floating phases in Rydberg atom arrays [61.242961328078245]
We experimentally observe the emergence of the quantum floating phase in 92 neutral-atom qubits.
The site-resolved measurement reveals the formation of domain walls within the commensurate ordered phase.
As the experimental system sizes increase, we show that the wave vectors approach a continuum of values incommensurate with the lattice.
arXiv Detail & Related papers (2024-01-16T03:26:36Z) - Observation of a symmetry-protected topological phase in external
magnetic fields [1.4515101661933258]
We report the real-space observation of a symmetry-protected topological phase with interacting nuclear spins.
We probe the interaction-induced transition between two topologically distinct phases, both of which are classified by many-body Chern numbers.
Our findings enable direct characterization of topological features of quantum many-body states through gradually decreasing the strength of the introduced external fields.
arXiv Detail & Related papers (2022-08-10T14:08:01Z) - Accessing the topological Mott insulator in cold atom quantum simulators
with realistic Rydberg dressing [58.720142291102135]
We investigate a realistic scenario for the quantum simulation of such systems using cold Rydberg-dressed atoms in optical lattices.
We perform a detailed analysis of the phase diagram at half- and incommensurate fillings, in the mean-field approximation.
We furthermore study the stability of the phases with respect to temperature within the mean-field approximation.
arXiv Detail & Related papers (2022-03-28T14:55:28Z) - Phase diagram of Rydberg-dressed atoms on two-leg square ladders:
Coupling supersymmetric conformal field theories on the lattice [52.77024349608834]
We investigate the phase diagram of hard-core bosons in two-leg ladders in the presence of soft-shoulder potentials.
We show how the competition between local and non-local terms gives rise to a phase diagram with liquid phases with dominant cluster, spin, and density-wave quasi-long-range ordering.
arXiv Detail & Related papers (2021-12-20T09:46:08Z) - Topological transitions with continuously monitored free fermions [68.8204255655161]
We show the presence of a topological phase transition that is of a different universality class than that observed in stroboscopic projective circuits.
We find that this entanglement transition is well identified by a combination of the bipartite entanglement entropy and the topological entanglement entropy.
arXiv Detail & Related papers (2021-12-17T22:01:54Z) - Qubit-photon bound states in topological waveguides with long-range
hoppings [62.997667081978825]
Quantum emitters interacting with photonic band-gap materials lead to the appearance of qubit-photon bound states.
We study the features of the qubit-photon bound states when the emitters couple to the bulk modes in the different phases.
We consider the coupling of emitters to the edge modes appearing in the different topological phases.
arXiv Detail & Related papers (2021-05-26T10:57:21Z) - Characterizing Topological Excitations of a Long-Range Heisenberg Model
with Trapped Ions [0.0]
We propose a Floquet protocol to realize the antiferromagnetic Heisenberg model with power-law decaying interactions.
We show that this model features a quantum phase transition from a liquid to a valence bond solid that spontaneously breaks lattice translational symmetry.
We moreover introduce an interferometric protocol to characterize the topological excitations and the bulk topological invariants of the interacting many-body system.
arXiv Detail & Related papers (2020-12-16T19:00:02Z) - Evaluating the phase dynamics of coupled oscillators via time-variant
topological features [3.480626767752489]
We use a topological approach to construct the quantitative features describing the phase evolution of oscillators.
The time-variant features provide crucial insights into the evolution of phase dynamics.
We demonstrate that our method can qualitatively explain chimera states.
arXiv Detail & Related papers (2020-05-07T09:19:26Z) - Topological Phase Transitions Induced by Varying Topology and Boundaries
in the Toric Code [0.0]
We study the sensitivity of such phases of matter to the underlying topology.
We claim that these phase transitions are accompanied by broken symmetries in the excitation space.
We show that the phase transition between such steady states is effectively captured by the expectation value of the open-loop operator.
arXiv Detail & Related papers (2020-04-07T18:00:06Z) - Dynamical solitons and boson fractionalization in cold-atom topological
insulators [110.83289076967895]
We study the $mathbbZ$ Bose-Hubbard model at incommensurate densities.
We show how defects in the $mathbbZ$ field can appear in the ground state, connecting different sectors.
Using a pumping argument, we show that it survives also for finite interactions.
arXiv Detail & Related papers (2020-03-24T17:31:34Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.