Universality of Dicke superradiance in arrays of quantum emitters

• URL: http://arxiv.org/abs/2106.02042v3
• Date: Wed, 25 May 2022 19:38:56 GMT
• Title: Universality of Dicke superradiance in arrays of quantum emitters
• Authors: Stuart J Masson and Ana Asenjo-Garcia
• Abstract summary: We show that Dicke superradiance is a universal phenomenon in ordered arrays. We present a theoretical framework that allows us to predict the critical distance beyond which Dicke superradiance disappears. Our predictions can be tested in state of the art experiments with arrays of neutral atoms, molecules, and solid-state emitters.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Dicke superradiance is an example of emergence of macroscopic quantum coherence via correlated dissipation. Starting from an initially incoherent state, a collection of excited atoms synchronizes as they decay, generating a macroscopic dipole moment and emitting a short and intense pulse of light. While well understood in cavities, superradiance remains an open problem in extended systems due to the exponential growth of complexity with atom number. Here we show that Dicke superradiance is a universal phenomenon in ordered arrays. We present a theoretical framework -- which circumvents the exponential complexity of the problem -- that allows us to predict the critical distance beyond which Dicke superradiance disappears. This critical distance is highly dependent on the dimensionality and atom number. Our predictions can be tested in state of the art experiments with arrays of neutral atoms, molecules, and solid-state emitters and pave the way towards understanding the role of many-body decay in quantum simulation, metrology, and lasing.

Related papers

• Dicke superradiance in ordered arrays of multilevel atoms [0.0]
  In inverted atomic ensembles, photon-mediated interactions give rise to Dicke superradiance, a form of many-body decay. Here, we investigate Dicke superradiance in a realistic experimental setting using ordered arrays of alkaline-earth(-like) atoms. Our work represents an important step in harnessing alkaline-earth atoms as quantum optical sources.
  arXiv  Detail & Related papers  (2023-03-31T19:33:35Z)
• The maximum refractive index of an atomic crystal $\unicode{x2013}$ from quantum optics to quantum chemistry [52.77024349608834]
  We investigate the index of an ordered arrangement of atoms, as a function of atomic density. In quantum optics, we show that ideal light-matter interactions can have a single-mode nature. At the onset of quantum chemistry, we show how two physical mechanisms can open up inelastic or spatial multi-mode light scattering processes.
  arXiv  Detail & Related papers  (2023-03-20T10:29:12Z)
• Characterizing superradiant dynamics in atomic arrays via a cumulant expansion approach [0.0]
  Ordered atomic arrays with subwavelength lattice spacing emit light collectively. For fully inverted atomic arrays, this results in an initial burst of radiation and a fast build up of coherences between the atoms at initial times. We benchmark the cumulant expansion approach and show that it correctly captures the cooperative dynamics resulting in superradiance.
  arXiv  Detail & Related papers  (2022-11-21T22:49:21Z)
• Superradiance of non-interacting atoms [0.0]
  Two-level atoms separated by less than the transition wavelength cooperatively emit light in a short burst. The burst is characterized by a maximum intensity scaling with the square of the number of atoms $N$. We show that in this case a similar superradiant burst of the emitted radiation is observed if the quantum correlations of the atoms are generated by conditional photon measurements.
  arXiv  Detail & Related papers  (2022-06-29T13:39:55Z)
• Formation of robust bound states of interacting microwave photons [148.37607455646454]
  One of the hallmarks of interacting systems is the formation of multi-particle bound states. We develop a high fidelity parameterizable fSim gate that implements the periodic quantum circuit of the spin-1/2 XXZ model. By placing microwave photons in adjacent qubit sites, we study the propagation of these excitations and observe their bound nature for up to 5 photons.
  arXiv  Detail & Related papers  (2022-06-10T17:52:29Z)
• 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)
• Superradiance and subradiance in inverted atomic arrays [0.0]
  Superradiance and subradiance are collective effects that emerge from coherent interactions between quantum emitters. We use herein a mean-field approach to reduce the complex many-body system to an effective two-atom master equation. We find that three-dimensional and two-dimensional inverted atomic arrays sustain superradiance below a critical lattice spacing.
  arXiv  Detail & Related papers  (2021-10-21T17:17:24Z)
• Dimerization of many-body subradiant states in waveguide quantum electrodynamics [137.6408511310322]
  We study theoretically subradiant states in the array of atoms coupled to photons propagating in a one-dimensional waveguide. We introduce a generalized many-body entropy of entanglement based on exact numerical diagonalization. We reveal the breakdown of fermionized subradiant states with increase of $f$ with emergence of short-ranged dimerized antiferromagnetic correlations.
  arXiv  Detail & Related papers  (2021-06-17T12:17:04Z)
• Intrinsic mechanisms for drive-dependent Purcell decay in superconducting quantum circuits [68.8204255655161]
  We find that in a wide range of settings, the cavity-qubit detuning controls whether a non-zero photonic population increases or decreases qubit decay Purcell. Our method combines insights from a Keldysh treatment of the system, and Lindblad theory.
  arXiv  Detail & Related papers  (2021-06-09T16:21:31Z)
• Quantum coherence and speed limit in the mean-field Dicke model of superradiance [0.0]
  We discuss the quantifying of quantum coherence for the Dicke model of superradiance in the mean-field approximation. We find the single-atom $l_1$-norm of coherence is given by the square root of the normalized average intensity of radiation emitted by the superradiant system.
  arXiv  Detail & Related papers  (2020-07-06T16:35:53Z)
• Maximum refractive index of an atomic medium [58.720142291102135]
  All optical materials with a positive refractive index have a value of index that is of order unity. Despite the giant response of an isolated atom, we find that the maximum index does not indefinitely grow with increasing density. We propose an explanation based upon strong-disorder renormalization group theory.
  arXiv  Detail & Related papers  (2020-06-02T14:57:36Z)

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.