Role of Matter Interactions in Superradiant Phenomena

• URL: http://arxiv.org/abs/2503.04961v2
• Date: Tue, 30 Sep 2025 13:01:22 GMT
• Title: Role of Matter Interactions in Superradiant Phenomena
• Authors: João Pedro Mendonça, Krzysztof Jachymski, Yao Wang,
• Abstract summary: Superradiant phenomenon, usually described by the Dicke model, is a hallmark of strong light-matter interaction.<n>We explore how matter-matter interactions influence this phenomenon by performing ground-state simulations.<n>Under anisotropic couplings, we uncover a strongly correlated phase where in-plane spin order coexists with superradiance.
• Score: 2.0271860168429123
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The superradiant phenomenon, usually described by the Dicke model, is a hallmark of strong light-matter interaction. We explore how matter-matter interactions influence this phenomenon by performing ground-state simulations of Dicke-like models with both isotropic and anisotropic spin couplings. We find that Ising-type interactions produce two qualitatively distinct phase boundaries, one of which gives rise to an antiferromagnetic-normal phase connected to the superradiant regime via a first-order phase transition. Under anisotropic couplings, we uncover a strongly correlated phase where in-plane spin order coexists with superradiance, exhibiting sublinear scaling of the photon occupation per site and power-law decay of spin correlations. Furthermore, superradiance can be strengthened by tuning either isotropic or anisotropic interactions, highlighting the role of intrinsic many-body correlations in shaping light-matter quantum phases.

Related papers

• Emergent Kitaev materials in synthetic Fermi-Hubbard bilayers [45.88028371034407]
  Bond-directional spin-spin interactions in a Fermi-Hubbard bilayer can be realized with ultracold fermions in Raman optical lattices.<n>We analyze the Fermi-liquid and Mott-insulating phases, highlighting a correspondence between Dirac and Majorana quasi-particles.<n>Our results establish that cold-atom quantum simulators based on Raman optical lattices can be a playground for extended Kitaev models.
  arXiv  Detail & Related papers  (2025-04-22T10:07:56Z)
• Superradiance of strongly interacting dipolar excitons in moiré quantum materials [0.08192907805418582]
  We study the cooperative radiance of moir'e excitons that is demonstrated to emerge from the deep subwavelength nature of the moir'e lattice. Our results show that interlayer moir'e excitons offer a unique platform for exploring cooperative optical phenomena in strongly interacting many-body systems.
  arXiv  Detail & Related papers  (2024-10-11T15:08:58Z)
• Photon correlation time-asymmetry and dynamical coherence in multichromophoric systems [44.99833362998488]
  We show that time-asymmetries in the cross-correlations of photons corresponding to different polarizations can be exploited to probe quantum coherent transport mechanisms and steady-state coherence properties. Our results put forward photon correlation asymmetry as a promising approach to investigate coherent contributions to excited-stated dynamics in molecular aggregates and other many-site quantum emitters.
  arXiv  Detail & Related papers  (2024-04-24T21:06:01Z)
• Directional spontaneous emission in photonic crystal slabs [49.1574468325115]
  Spontaneous emission is a fundamental out-of-equilibrium process in which an excited quantum emitter relaxes to the ground state due to quantum fluctuations. One way to modify these photon-mediated interactions is to alter the dipole radiation patterns of the emitter, e.g., by placing photonic crystals near them. Our study delves into the interaction between these directional emission patterns and the aforementioned variables, revealing the untapped potential to fine-tune collective quantum optical phenomena.
  arXiv  Detail & Related papers  (2023-12-04T15:35:41Z)
• Quantum Phase Transitions in a Generalized Dicke Model [2.723809629055624]
  We investigate a generalized Dicke model by introducing two interacting spin ensembles coupled with a single-mode bosonic field. Ferromagnetic spin-spin interaction can significantly reduce the required spin-boson coupling strength to observe the superradiant phase. To examine higher-order quantum effects beyond the mean-field contribution, we utilize the Holstein-Primakoff transformation.
  arXiv  Detail & Related papers  (2023-10-29T11:00:56Z)
• Higher-order topological Peierls insulator in a two-dimensional atom-cavity system [58.720142291102135]
  We show how photon-mediated interactions give rise to a plaquette-ordered bond pattern in the atomic ground state. The pattern opens a non-trivial topological gap in 2D, resulting in a higher-order topological phase hosting corner states. Our work shows how atomic quantum simulators can be harnessed to investigate novel strongly-correlated topological phenomena.
  arXiv  Detail & Related papers  (2023-05-05T10:25:14Z)
• Phases, instabilities and excitations in a two-component lattice model with photon-mediated interactions [0.12233362977312942]
  We study a two-component spin Bose-Hubbard system with cavity-mediated interactions. The interplay of different energy scales yields a rich phase diagram with superfluid and insulating phases. The studied lattice model can be readily realized in cold-atom experiments with optical cavities.
  arXiv  Detail & Related papers  (2022-10-20T14:45:01Z)
• Concentrated subradiant modes in one-dimensional atomic array coupled with chiral waveguides [0.510036543634541]
  Non-Hermitian systems have recently attracted broad interest and exhibited intriguing physical phenomena. Here we propose a non-Hermitian atom-waveguide system composed of a tilted one-dimensional atomic array. We find the excitation of the collective atomic states concentrates in the middle interface, pointing towards the non-Hermitian skin effect.
  arXiv  Detail & Related papers  (2022-08-23T07:34:26Z)
• Probing dynamics of a two-dimensional dipolar spin ensemble using single qubit sensor [62.997667081978825]
  We experimentally investigate individual spin dynamics in a two-dimensional ensemble of electron spins on the surface of a diamond crystal. We show that this anomalously slow relaxation rate is due to the presence of strong dynamical disorder. Our work paves the way towards microscopic study and control of quantum thermalization in strongly interacting disordered spin ensembles.
  arXiv  Detail & Related papers  (2022-07-21T18:00:17Z)
• 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)
• Entangled biphoton enhanced double quantum coherence signal as a probe for cavity polariton correlations in presence of phonon induced dephasing [0.0]
  We propose a biphoton entanglement-enhanced multidimensional spectroscopic technique as a probe for the dissipative polariton dynamics in the ultrafast regime. The proposed technique is shown to be particularly sensitive to inter-manifold polariton coherence between the two and one-excitation subspaces. It is demonstrated to be able to monitor the dynamical role of cavity-mediated excitonic correlations, and dephasing in the presence of phonon-induced dissipation.
  arXiv  Detail & Related papers  (2022-05-31T11:25:34Z)
• Superradiance and Subradiance in Dense Atomic Gases: An Integrated Method [0.0]
  We introduce an integrated method for studying cooperative radiation in many-body systems. We apply this method to a homogeneous gas of initially inverted two-level atoms. We show the appearance of both superradiance and subradiance, and identify a many-body coherence term as the source of these cooperative effects.
  arXiv  Detail & Related papers  (2022-05-30T17:04:12Z)
• 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)
• Chemical tuning of spin clock transitions in molecular monomers based on nuclear spin-free Ni(II) [52.259804540075514]
  We report the existence of a sizeable quantum tunnelling splitting between the two lowest electronic spin levels of mononuclear Ni complexes. The level anti-crossing, or magnetic clock transition, associated with this gap has been directly monitored by heat capacity experiments. The comparison of these results with those obtained for a Co derivative, for which tunnelling is forbidden by symmetry, shows that the clock transition leads to an effective suppression of intermolecular spin-spin interactions.
  arXiv  Detail & Related papers  (2021-03-04T13:31:40Z)
• Self-induced glassy phase in multimodal cavity quantum electrodynamics [0.0]
  We present results showing that the system has a low-temperature glassy phase. For rational values of the only free adimensional parameter $alpha=p/q$ of the interaction, the number of metastable states at low temperature grows exponentially.
  arXiv  Detail & Related papers  (2021-01-11T08:23:20Z)
• Light-matter interactions near photonic Weyl points [68.8204255655161]
  Weyl photons appear when two three-dimensional photonic bands with linear dispersion are degenerated at a single momentum point, labeled as Weyl point. We analyze the dynamics of a single quantum emitter coupled to a Weyl photonic bath as a function of its detuning with respect to the Weyl point.
  arXiv  Detail & Related papers  (2020-12-23T18:51:13Z)
• Strong-field physics in three-dimensional topological insulators [0.0]
  We focus on the process of non-perturbative high-order harmonic generation from the paradigmatic three-dimensional topological insulator bisselenide. We analyze the contributions from the spin-orbit-coupled bulk states and the topological surface bands separately and reveal a major difference in how their harmonic yields depend on the ellipticity of the laser field.
  arXiv  Detail & Related papers  (2020-08-04T01:24:00Z)
• Optically pumped spin polarization as a probe of many-body thermalization [50.591267188664666]
  We study the spin diffusion dynamics of 13C in diamond, which we dynamically polarize at room temperature via optical spin pumping of engineered color centers. We find good thermal contact throughout the nuclear spin bath, virtually independent of the hyperfine coupling strength. Our results open intriguing opportunities to study the onset of thermalization in a system by controlling the internal interactions within the bath.
  arXiv  Detail & Related papers  (2020-05-01T23:16:33Z)

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.