Adding Photonic Entanglement to Superradiance by Using Multilevel Atoms

• URL: http://arxiv.org/abs/2410.13655v2
• Date: Wed, 08 Jan 2025 15:55:40 GMT
• Title: Adding Photonic Entanglement to Superradiance by Using Multilevel Atoms
• Authors: Amir Sivan, Meir Orenstein,
• Abstract summary: photonic states emitted by ensembles of multilevel atoms via a superradiance process exhibit entanglement in the modal degree of freedom.<n>We show here that this collective emission process is a favorable candidate for a fast, bright and deterministic source of entangled photons.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We show here that the photonic states emitted by ensembles of multilevel atoms via a superradiance process exhibit entanglement in the modal (frequency) degree of freedom, making this collective emission process a favorable candidate for a fast, bright and deterministic source of entangled photons. This entanglement is driven by two mechanisms: (i) selective excitation of the atomic ensemble to a superposition state and (ii) degeneracies of the optical transitions due to internal structure of the emitting atoms. The latter induces intricate non-radiative virtual transitions in the ensemble, which create interatomic correlations that are imprinted onto the emitted photons. One of the important outcomes of this complexity is the generation of mode-independent entangled multiphoton states. In addition, we study the dynamics of the correlations of the superradiating multilevel atom ensembles, and demonstrate a case where they exhibit beating in steady-state due to the aforementioned virtual transitions.

Related papers

• Non-Markovian dynamics with $Λ$-type atomic systems in a single end photonic waveguide [3.3876783017014214]
  We investigate the non-Markovian dynamical evolution of a $da$-Lamb-type atom interacting with a semi-infinite one-dimensional photonic waveguide. We show that, under suitable conditions, the instantaneous and retarded decay rates reach equilibrium, leading to the formation of an atom-photon bound state. We extend the model to a two-atom system and examine the disentanglement dynamics of the two spatially separated atoms.
  arXiv  Detail & Related papers  (2025-03-19T13:55:03Z)
• Interpretation of Superradiant Ramsey Spectroscopy in a Coherent Picture Based on Transverse Spins Superposition [6.440392138973035]
  Recent experiments demonstrated Ramsey spectroscopy with delayed superradiance of strontium-88 atoms transversely excited by a laser pulse. We introduce two complementary pictures by considering the in-phase and out-phase superposition of the transverse collective spin operators of two atomic sub-ensembles. Our simulations suggest that a coherent picture of the whole atomic ensemble can only be established by employing different pictures for the dynamics associated with the external driving.
  arXiv  Detail & Related papers  (2025-03-14T16:46:45Z)
• Correlated relaxation and emerging entanglement in arrays of $Λ$-type atoms [83.88591755871734]
  We show that the atomic entanglement emerges in the course of relaxation and persists in the final steady state of the system. Our findings open a new way to engineer dissipation-induced entanglement.
  arXiv  Detail & Related papers  (2024-11-11T08:39:32Z)
• Collective coupling of driven multilevel atoms and its effect on four-wave mixing [0.0]
  We present a systematic analysis of the cooperative effects arising in driven systems composed of multilevel atoms coupled via a common electromagnetic environment. The dependence of single and two-photon correlations are studied in detail for each region by varying atomic orientations. It is found that the anisotropy of the dipole-dipole interaction and its wave nature are essential to understand the behavior of the photons correlations.
  arXiv  Detail & Related papers  (2024-04-04T17:36:24Z)
• 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)
• 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)
• The Adiabatic Wigner-Weisskopf Model [0.0]
  We consider a slowly varying time dependent d-level atom interacting with a photon field. We analyze the dynamics of the atom and of the radiation field in the adiabatic and small coupling approximations.
  arXiv  Detail & Related papers  (2022-10-27T19:10:01Z)
• Correlated steady states and Raman lasing in continuously pumped and probed atomic ensembles [68.8204255655161]
  We consider an ensemble of Alkali atoms that are continuously optically pumped and probed. Due to the collective scattering of photons at large optical depth, the steady state of atoms does not correspond to an uncorrelated tensor-product state. We find and characterize regimes of Raman lasing, akin to the model of a superradiant laser.
  arXiv  Detail & Related papers  (2022-05-10T06:54:54Z)
• Collective photon emission patterns from two atoms in free space [26.98676199482944]
  Modification of spontaneous decay in space and time is a central topic of quantum physics. We study the resulting collective spontaneous emission patterns in entangled Dicke states. Our results demonstrate that the detection of a single photon can profoundly modify the collective emission of an atomic array.
  arXiv  Detail & Related papers  (2022-02-28T10:53:39Z)
• Connecting steady-states of driven-dissipative photonic lattices with spontaneous collective emission phenomena [91.3755431537592]
  We use intuition to predict the formation of non-trivial photonic steady-states in one and two dimensions. We show that subradiant emitter configurations are linked to the emergence of steady-state light-localization in the driven-dissipative setting. These results shed light on the recently reported optically-defined cavities in polaritonic lattices.
  arXiv  Detail & Related papers  (2021-12-27T23:58:42Z)
• 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)
• Collective spontaneous emission of two entangled atoms near an oscillating mirror [50.591267188664666]
  We consider the cooperative spontaneous emission of a system of two identical atoms, interacting with the electromagnetic field in the vacuum state. Using time-dependent theory, we investigate the spectrum of the radiation emitted by the two-atom system. We show that it is modulated in time, and that the presence of the oscillating mirror can enhance or inhibit the decay rate.
  arXiv  Detail & Related papers  (2020-10-07T06:48:20Z)
• Hyperentanglement in structured quantum light [50.591267188664666]
  Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols. Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes. We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
  arXiv  Detail & Related papers  (2020-06-02T18:00:04Z)
• Atom-Photon Spin-Exchange Collisions Mediated by Rydberg Dressing [11.207403145794927]
  We show that photons propagating through a Rydberg-dressed atomic ensemble can exchange its spin state with a single atom. Such a spin-exchange collision exhibits both dissipative and coherent features, depending on the interaction strength.
  arXiv  Detail & Related papers  (2020-03-19T12:04:53Z)

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.