Floquet engineering the quantum Rabi model in the ultrastrong coupling regime

• URL: http://arxiv.org/abs/2407.16188v1
• Date: Tue, 23 Jul 2024 05:26:56 GMT
• Title: Floquet engineering the quantum Rabi model in the ultrastrong coupling regime
• Authors: Kamran Akbari, Franco Nori, Stephen Hughes,
• Abstract summary: We study the quantum Rabi model for a two-level system coupled to a quantized cavity mode under periodic modulation of the cavity-dipole coupling in the ultrastrong coupling regime, leading to rich Floquet states. As an application of the theory, we show how purely mechanical driving can produce real photons, depending on the strength and frequency of the periodic coupling rate.
• Score: 0.5852077003870417
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We study the quantum Rabi model for a two-level system coupled to a quantized cavity mode under periodic modulation of the cavity-dipole coupling in the ultrastrong coupling regime, leading to rich Floquet states. As an application of the theory, we show how purely mechanical driving can produce real photons, depending on the strength and frequency of the periodic coupling rate.

Related papers

• Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
  We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits. We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
  arXiv  Detail & Related papers  (2024-08-30T15:54:33Z)
• Controlling superradiant phase transition in quantum Rabi model [6.544489788514925]
  In the ultrastrong-coupling regime, the quantum Rabi model can exhibit quantum phase transition (QPT) when the ratio of the qubit transition frequency to the frequency of the cavity field approaches infinity. Here, we propose a practical scheme to manipulate the QPT of quantum Rabi model in the strong-coupling regime. We find that the QPT of quantum Rabi model can be observed in the strong-coupling regime and externally controlled by the modulation.
  arXiv  Detail & Related papers  (2024-07-30T09:32:12Z)
• Periodic quantum Rabi model with cold atoms at deep strong coupling [0.0]
  We experimentally demonstrate atomic dynamics predicted by the periodic quantum Rabi model far in the deep strong coupling regime. The observed dynamics becomes relevant when the edge of the Brillouin zone is reached.
  arXiv  Detail & Related papers  (2023-07-12T22:49:07Z)
• Quantum phase transition of the Jaynes-Cummings model [5.430084892262298]
  We show an experimentally feasible scheme to show the quantum phase transition of the Jaynes-Cummings (JC) model. The ratio of the coupling strength to resonance frequencies in the deep-strong JC model is two orders of magnitude larger than the corresponding ratio in the original quantum Rabi model.
  arXiv  Detail & Related papers  (2023-06-23T14:35:22Z)
• Hyper-entanglement between pulse modes and frequency bins [101.18253437732933]
  Hyper-entanglement between two or more photonic degrees of freedom (DOF) can enhance and enable new quantum protocols. We demonstrate the generation of photon pairs hyper-entangled between pulse modes and frequency bins.
  arXiv  Detail & Related papers  (2023-04-24T15:43:08Z)
• Quantum emulation of the transient dynamics in the multistate Landau-Zener model [50.591267188664666]
  We study the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity. Our experiments pave the way for more complex simulations with qubits coupled to an engineered bosonic mode spectrum.
  arXiv  Detail & Related papers  (2022-11-26T15:04:11Z)
• Frequency combs with parity-protected cross-correlations from dynamically modulated qubit arrays [117.44028458220427]
  We develop a general theoretical framework to dynamically engineer quantum correlations in the frequency-comb emission from an array of superconducting qubits in a waveguide. We demonstrate, that when the resonance of the two qubits are periodically modulated with a $pi$ phase shift, it is possible to realize simultaneous bunching and antibunching in cross-correlations of the scattered photons from different sidebands.
  arXiv  Detail & Related papers  (2022-03-01T13:12:45Z)
• Quantum Rabi dynamics of trapped atoms far in the deep strong coupling regime [0.0]
  We show a periodic variant of the quantum Rabi model in which the two-level system is encoded in the Bloch band structure of cold rubidium atoms in optical potentials. Our work demonstrates a route to realize quantum-engineering applications in yet unexplored parameter regimes.
  arXiv  Detail & Related papers  (2021-12-23T12:27:24Z)
• Photon pumping in a weakly-driven quantum cavity-spin system [0.0]
  In the strong-drive adiabatic limit, a quantized frequency conversion of photons is expected as the temporal analog of the Hall current. We numerically establish a novel photon pumping phenomenon in the experimentally accessible nonadiabatic driving regime.
  arXiv  Detail & Related papers  (2021-04-13T18:00:02Z)
• Microwave multiphoton conversion via coherently driven permanent dipole systems [68.8204255655161]
  We investigate a leaking single-mode quantized cavity field coupled with a resonantly driven two-level system possessing permanent dipoles. The frequencies of the interacting subsystems are being considered very different, e.g., microwave ranges for the cavity and optical domains for the frequency of the two-level emitter, respectively.
  arXiv  Detail & Related papers  (2020-08-12T16:20:44Z)
• Waveguide quantum optomechanics: parity-time phase transitions in ultrastrong coupling regime [125.99533416395765]
  We show that the simplest set-up of two qubits, harmonically trapped over an optical waveguide, enables the ultrastrong coupling regime of the quantum optomechanical interaction. The combination of the inherent open nature of the system and the strong optomechanical coupling leads to emerging parity-time (PT) symmetry. The $mathcalPT$ phase transition drives long-living subradiant states, observable in the state-of-the-art waveguide QED setups.
  arXiv  Detail & Related papers  (2020-07-04T11:02:20Z)

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.