Programmable spectral symmetries in an anisotropic quantum Rabi simulator

• URL: http://arxiv.org/abs/2606.05270v1
• Date: Wed, 03 Jun 2026 17:08:27 GMT
• Title: Programmable spectral symmetries in an anisotropic quantum Rabi simulator
• Abstract summary: We realize a programmable anisotropic quantum Rabi model in a superconducting processor.<n>We show that anisotropy reconstructs the spectrum and turns complete collapse-revival dynamics into incomplete revivals even near degeneracy.
• Score: 23.8573887639585
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The quantum Rabi model captures fundamental aspects of light--matter interaction, where symmetry dictates both spectra and dynamics. Over the past years, experiments have explored many of its nonperturbative properties, but have mostly focused on the isotropic limit, where rotating and counterrotating processes are locked together, leaving the broader symmetry landscape largely unexplored. Here we realize a programmable anisotropic quantum Rabi model in a superconducting processor, with independent control of the rotating and counterrotating couplings $(g_1,g_2)$ and of a transverse bias $\varepsilon$. Continuous anisotropy tuning, combined with a duality mapping, gives access to the full parameter space from the Jaynes-Cummings to the anti-Jaynes-Cummings limits. In the deep-strong-coupling regime, we show that anisotropy reconstructs the spectrum and turns complete collapse-revival dynamics into incomplete revivals even near degeneracy. With adiabatic state preparation and joint tomography, we resolve an anisotropy-induced ground-state parity switch, a crossing that has no analogue in the isotropic model. We further observe selective tunnelling associated with hidden symmetry in biased Rabi models and track its anisotropic displacement within the same device. These results establish a controllable route to engineering nonperturbative light--matter Hamiltonians, where symmetry, spectrum, and dynamics can be programmed independently.

Related papers

• Geometry-Controlled Exceptional Points in Helicoidal Orbital-Angular-Momentum Photonics [0.0]
  Exceptional points (EPs) are non-Hermitian spectral singularities where eigenvalues and eigenvectors coalesce.<n>We propose a geometry-controlled route to EPs in orbital-angular-momentum (OAM) photonics.
  arXiv  Detail & Related papers  (2026-06-20T21:53:12Z)
• Constructing Arbitrary Coherent Rearrangements in Optical Lattices [36.94429692322632]
  Coherent control of motional degrees of freedom of ultracold atoms in optical lattices offers a promising route towards programmable quantum dynamics with massive particles.<n>We propose and analyze a scheme for implementing coherent rearrangement of ultracold atoms, corresponding to arbitrary unitary transformations on single-particle motional states.
  arXiv  Detail & Related papers  (2026-03-04T15:57:12Z)
• Symmetry-protected topology and deconfined solitons in a multi-link $\mathbb{Z}_2$ gauge theory [45.88028371034407]
  We study a $mathbbZ$ lattice gauge theory defined on a multi-graph with links that can be visualized as great circles of a spherical shell.<n>We show that this leads to state-dependent tunneling amplitudes underlying a phenomenon analogous to the Peierls instability.<n>By performining a detailed analysis based on matrix product states, we prove that charge deconfinement emerges as a consequence of charge-fractionalization.
  arXiv  Detail & Related papers  (2026-03-02T22:59:25Z)
• Hall-like response from anisotropic Fermi surfaces [0.0]
  An anisotropic and rotated Fermi surface can generate a finite Hall-like transverse response in electron transport.<n>Results provide a symmetry-based route to engineer Hall-like signals in low-symmetry materials.
  arXiv  Detail & Related papers  (2025-12-04T17:26:24Z)
• Anomalies on the Lattice, Homotopy of Quantum Cellular Automata, and a Spectrum of Invertible States [41.99844472131922]
  We develop a rigorous theory of anomalies on the lattice, which are obstructions to gauging global symmetries and the existence of trivial symmetric states.<n>We also construct $$-spectra of a class of invertible states and quantum cellular automata, which allows us to classify both anomalies and symmetry protected topological phases up to blend equivalence.
  arXiv  Detail & Related papers  (2025-12-01T19:00:01Z)
• Engineering One Axis Twisting via a Dissipative Berry Phase Using Strong Symmetries [0.0]
  We show how a driven-dissipative cavity coupled to a collective ensemble of atoms can generate metrologically useful spin-squeezed states.<n>This work shows that it is possible to generate entanglement in an atom-cavity resonant regime with macroscopic optical excitations of the system.
  arXiv  Detail & Related papers  (2024-01-11T19:03:46Z)
• Parity-dependent unidirectional and chiral photon transfer in reversed-dissipation cavity optomechanics [11.712867508048555]
  We show broadband nonreciprocal photon transmission in the emphreversed-dissipation regime. In the reversed-dissipation regime, the nonreciprocal bandwidth is no longer limited by the mechanical mode linewidth. We find that the direction of the unidirectional and chiral energy transfer could be reversed by changing the emphparity of the Eps.
  arXiv  Detail & Related papers  (2022-12-22T23:57:00Z)
• Noise-resilient Edge Modes on a Chain of Superconducting Qubits [103.93329374521808]
  Inherent symmetry of a quantum system may protect its otherwise fragile states. We implement the one-dimensional kicked Ising model which exhibits non-local Majorana edge modes (MEMs) with $mathbbZ$ parity symmetry. MEMs are found to be resilient against certain symmetry-breaking noise owing to a prethermalization mechanism.
  arXiv  Detail & Related papers  (2022-04-24T22:34:15Z)
• Non-Gaussian superradiant transition via three-body ultrastrong coupling [62.997667081978825]
  We introduce a class of quantum optical Hamiltonian characterized by three-body couplings. We propose a circuit-QED scheme based on state-of-the-art technology that implements the considered model.
  arXiv  Detail & Related papers  (2022-04-07T15:39:21Z)
• Tuning long-range fermion-mediated interactions in cold-atom quantum simulators [68.8204255655161]
  Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
  arXiv  Detail & Related papers  (2022-03-31T13:32:12Z)
• Emergent non-Hermitian localization phenomena in the synthetic space of zero-dimensional bosonic systems [0.0]
  Phase transitions in non-Hermitian systems are at the focus of cutting edge theoretical and experimental research. We show how the non-Hermitian localization phenomena can naturally emerge in the synthetic field moments space of zero-dimensional bosonic systems.
  arXiv  Detail & Related papers  (2021-10-28T16:44:52Z)

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.