Quantum phase transitions of the anisotropic Dicke-Ising model in driven Rydberg arrays
- URL: http://arxiv.org/abs/2511.22230v1
- Date: Thu, 27 Nov 2025 08:51:36 GMT
- Title: Quantum phase transitions of the anisotropic Dicke-Ising model in driven Rydberg arrays
- Authors: Bao-Yun Dong, Ying Liang, Stefano Chesi, Xue-Feng Zhang,
- Abstract summary: We study the properties of a generalized Dicke-Ising model realized with an array of Rydberg atoms, driven by microwave electric fields and coupled to an optical cavity.<n>We develop an improved quantum Monte Carlo algorithm based on the series expansion that explicitly tracks the Fock state of the quantum cavity.
- Score: 3.8044603248326516
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We study the properties of a generalized Dicke-Ising model realized with an array of Rydberg atoms, driven by microwave electric fields and coupled to an optical cavity. As this platform allows for a precisely tunable anisotropy parameter, the model exhibits a rich landscape of phase transitions and critical phenomena, induced by the interplay of rotating-wave, counter-rotating-wave, and Ising interactions. We develop an improved quantum Monte Carlo algorithm based on the stochastic series expansion that explicitly tracks the Fock state of the quantum cavity. In the superradiant (SR) phase, this allows us to determine, through data collapse, the scaling laws of the photon number. We also demonstrate the vanishing of parity symmetry in finite-size simulations and show that the Rydberg blockade leads to a significant suppression of cavity occupation. Notably, stronger quantum fluctuations induced by the counter-rotating wave terms slightly favor the superradiant solid (SRS) phase over the Solid-1/2 state. Finally, we confirm that the SR phase transition and the transition from the Solid-1/2 to the SRS are second-order. In contrast, the transitions from the Solid-1/2 or SRS to the SR phase are both first-order for any value of the normalized anisotropy parameter.
Related papers
- Topological Phase Transitions and Mixed State Order in a Hubbard Quantum Simulator [36.556659404501914]
Topological phase transitions challenge conventional paradigms in many-body physics.<n>We observe such a transition between one-dimensional crystalline symmetry-protected topological phases.<n>Our results demonstrate how topology and information influence quantum phase transitions.
arXiv Detail & Related papers (2025-05-22T17:58:35Z) - 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) - Spin fluctuations in the dissipative phase transitions of the quantum
Rabi model [0.998109397893173]
We investigate the dissipative phase transitions of the anisotropic quantum Rabi model with cavity decay.
Our findings indicate a general tendency of forming extreme non-equilibrium states in the single-spin system.
arXiv Detail & Related papers (2023-12-11T13:35:05Z) - Phase transitions of the anisotropic Dicke model [0.0]
We systematically analyze the various phase transitions of the anisotropic Dicke model.
An exciting finding from our work is that the ESQPT and the ENET are closely related to each other.
arXiv Detail & Related papers (2023-04-16T18:44:16Z) - Fully packed quantum loop model on the square lattice: phase diagram and
application for Rydberg atoms [4.860868900388247]
We show the complete ground state phase diagram of the fully packed quantum loop model on the square lattice.
We find between the lattice nematic (LN) phase with strong dimer attraction and the staggered phase (SP) with strong dimer repulsion, there emerges a resonating plaquette (RP) phase.
Our renormalization group analysis reveals the different flow directions, fully consistent with the order parameter histogram in Monte Carlo simulations.
arXiv Detail & Related papers (2022-09-22T01:49:51Z) - Characterizing Superradiant Phase of the Quantum Rabi Model [0.0]
Recently, a superradiant phase transition first predicted theoretically in the quantum Rabi model (QRM) has been verified experimentally.
This further stimulates the interest in the study of the process of phase transition and the nature of the superradiant phase.
arXiv Detail & Related papers (2022-07-27T04:20:59Z) - Quantum chaos and thermalization in the two-mode Dicke model [77.34726150561087]
We discuss the onset of quantum chaos and thermalization in the two-mode Dicke model.
The two-mode Dicke model exhibits normal to superradiant quantum phase transition.
We show that the temporal fluctuations of the expectation value of the collective spin observable around its average are small and decrease with the effective system size.
arXiv Detail & Related papers (2022-07-08T11:16:29Z) - Photoinduced prethermal order parameter dynamics in the two-dimensional
large-$N$ Hubbard-Heisenberg model [77.34726150561087]
We study the microscopic dynamics of competing ordered phases in a two-dimensional correlated electron model.
We simulate the light-induced transition between two competing phases.
arXiv Detail & Related papers (2022-05-13T13:13:31Z) - Clean two-dimensional Floquet time-crystal [68.8204255655161]
We consider the two-dimensional quantum Ising model, in absence of disorder, subject to periodic imperfect global spin flips.
We show by a combination of exact diagonalization and tensor-network methods that the system can sustain a spontaneously broken discrete time-translation symmetry.
We observe a non-perturbative change in the decay rate of the order parameter, which is related to the long-lived stability of the magnetic domains in 2D.
arXiv Detail & Related papers (2022-05-10T13:04:43Z) - 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) - Superradiant phase transition in complex networks [62.997667081978825]
We consider a superradiant phase transition problem for the Dicke-Ising model.
We examine regular, random, and scale-free network structures.
arXiv Detail & Related papers (2020-12-05T17:40:53Z) - Discrete truncated Wigner approach to dynamical phase transitions in
Ising models after a quantum quench [0.0]
We study dynamical phase transitions arising in the steady state of transverse-field Ising models after a quantum quench.
We find identical exponents for $alpha lesssim 0.5$, suggesting that the dynamical transitions in this regime fall into the same universality class as the nonergodic mean-field limit.
arXiv Detail & Related papers (2020-04-21T08:20:15Z) - Entanglement robustness to excitonic spin precession in a quantum dot [43.55994393060723]
A semiconductor quantum dot (QD) is an attractive resource to generate polarization-entangled photon pairs.
We study the excitonic spin precession (flip-flop) in a family of QDs with different excitonic fine-structure splitting (FSS)
Our results reveal that coherent processes leave the time post-selected entanglement of QDs unaffected while changing the eigenstates of the system.
arXiv Detail & Related papers (2020-01-31T13:50:51Z)
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.