Jaynes-Cummings dynamics in strong coupling for many-interacting-qubit quantum Rabi models

• URL: http://arxiv.org/abs/2604.20363v1
• Date: Wed, 22 Apr 2026 09:01:30 GMT
• Title: Jaynes-Cummings dynamics in strong coupling for many-interacting-qubit quantum Rabi models
• Abstract summary: The present work focuses on the strong/weak interaction of many-body spin-systems with a cavity mode.<n>It introduces the necessity of redefining the physical conditions determining the strong/weak coupling regime in those systems.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The present work focuses on the strong/weak interaction of many-body spin-systems with a cavity mode. It introduces the necessity of redefining the physical conditions determining the strong/weak coupling regime in those systems. In more complex systems, the effective coupling emerging from the collective dynamics may differ indeed from the actual coupling of each individual subsystem with the bosonic field. This is shown by highlighting some counter-intuitive dynamical effects properly related to the coupling regime: a Jaynes-Cummings dynamics emerging although a strong interaction is present. The universality of this result is demonstrated through the analysis of three distinct systems: a two-qubit, a two-qutrit, and an $N$-qubit chain quantum Rabi models.

Related papers

• Quantum fluctuations and chaos in fully connected spin models [84.0552206158625]
  We investigate beyond-mean-field dynamics in a fully connected $mathrmSU(3)$ spin-exchange model.<n>Using the two-particle irreducible (2PI) effective action formalism, we derive equations of motion that account for higher-order correlations generated by interactions.<n>Our results show that an accurate treatment of fluctuations is essential for describing macroscopic dynamics in quantum many-body systems.
  arXiv  Detail & Related papers  (2026-05-26T15:53:43Z)
• Collective Dynamics in Circuit Quantum Acoustodynamics with a Macroscopic Resonator [12.926291526695055]
  We report collective Dicke dynamics of acoustic modes in a macroscopic high-overtone bulk acoustic resonator (HBAR)<n>Our work establishes HBAR-based hybrid quantum system as a promising platform for exploring many-body collective dynamics in macroscopic mechanical systems.
  arXiv  Detail & Related papers  (2026-03-21T12:51:10Z)
• Switchable Dissipative Ising coupling Based on Three-Body Coupling in magnon systems [10.990967885586928]
  We propose a method to realize switchable dissipative Ising coupling in magnon systems.<n>This type of dissipative coupling is a critical component for constructing Ising machines.
  arXiv  Detail & Related papers  (2025-11-27T03:38:00Z)
• Collisional model with dissipative and dephasing baths: Nonadditive effects at strong coupling [39.146761527401424]
  We show that when both baths act concurrently, a strong system-bath coupling gives rise to nonadditive effects in the dynamics.<n>A prominent signature of this nonadditivity is the characteristic it slowing down of population relaxation, driven by the influence of the dephasing bath.
  arXiv  Detail & Related papers  (2025-09-13T21:37:43Z)
• Evolution of multi-qubit correlations driven by mutual interactions [49.1574468325115]
  We analyze the evolution of the correlation tensor elements of quantum systems composed of $frac12$-spins.<n>We show how a strong external field can play a stabilizing factor with respect to certain correlation characteristics.
  arXiv  Detail & Related papers  (2025-07-01T11:45:08Z)
• Engineering protected cavity-QED interactions through pulsed dynamical decoupling [0.0]
  We study a generic cavity QED setup under conditions where the coupling between the two-level systems and a single bosonic mode is significantly degraded by low-frequency noise.<n>We identify pulsed dynamical decoupling strategies that suppress the effects of noise while still allowing for a coherent exchange of excitations between the individual subsystems.
  arXiv  Detail & Related papers  (2025-05-05T18:05:58Z)
• Efficiency of Dynamical Decoupling for (Almost) Any Spin-Boson Model [44.99833362998488]
  We analytically study the dynamical decoupling of a two-level system coupled with a structured bosonic environment.<n>We find sufficient conditions under which dynamical decoupling works for such systems.<n>Our bounds reproduce the correct scaling in various relevant system parameters.
  arXiv  Detail & Related papers  (2024-09-24T04:58:28Z)
• Bath-induced interactions and transient dynamics in open quantum systems at strong coupling: Effective Hamiltonian approach [0.0]
  We employ the recently-developed method dubbed the effective Hamiltonian theory to understand the dynamics of system-bath configurations. Through a combination of mapping steps and truncation, the effective Hamiltonian theory offers both analytical insights into signatures of strong couplings. We show that although the former overlooks non-Markovian features in the transient equilibration dynamics, it correctly captures non-perturbative bath-generated couplings.
  arXiv  Detail & Related papers  (2024-03-06T00:47:38Z)
• Dynamics with autoregressive neural quantum states: application to critical quench dynamics [41.94295877935867]
  We present an alternative general scheme that enables one to capture long-time dynamics of quantum systems in a stable fashion. We apply the scheme to time-dependent quench dynamics by investigating the Kibble-Zurek mechanism in the two-dimensional quantum Ising model.
  arXiv  Detail & Related papers  (2022-09-07T15:50:00Z)
• Decimation technique for open quantum systems: a case study with driven-dissipative bosonic chains [62.997667081978825]
  Unavoidable coupling of quantum systems to external degrees of freedom leads to dissipative (non-unitary) dynamics. We introduce a method to deal with these systems based on the calculation of (dissipative) lattice Green's function. We illustrate the power of this method with several examples of driven-dissipative bosonic chains of increasing complexity.
  arXiv  Detail & Related papers  (2022-02-15T19:00:09Z)
• Quantum Non-equilibrium Many-Body Spin-Photon Systems [91.3755431537592]
  dissertation concerns the quantum dynamics of strongly-correlated quantum systems in out-of-equilibrium states. Our main results can be summarized in three parts: Signature of Critical Dynamics, Driven Dicke Model as a Test-bed of Ultra-Strong Coupling, and Beyond the Kibble-Zurek Mechanism.
  arXiv  Detail & Related papers  (2020-07-23T19:05:56Z)
• Feedback-induced instabilities and dynamics in the Jaynes-Cummings model [62.997667081978825]
  We investigate the coherence and steady-state properties of the Jaynes-Cummings model subjected to time-delayed coherent feedback. The introduced feedback qualitatively modifies the dynamical response and steady-state quantum properties of the system.
  arXiv  Detail & Related papers  (2020-06-20T10:07:01Z)
• Switching dynamics of single and coupled VO2-based oscillators as elements of neural networks [55.41644538483948]
  We report on the switching dynamics of both single and coupled VO2-based oscillators, with resistive and capacitive coupling, and explore the capability of their application in neural networks. For the resistive coupling, it is shown that synchronization takes place at a certain value of the coupling resistance, though it is unstable and a synchronization failure occurs periodically. For the capacitive coupling, two synchronization modes, with weak and strong coupling, are found. The transition between these modes is accompanied by chaotic oscillations.
  arXiv  Detail & Related papers  (2020-01-07T02:16:04Z)

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.