Spontaneously sliding multipole spin density waves in cold atoms

• URL: http://arxiv.org/abs/2310.17305v2
• Date: Tue, 27 Feb 2024 16:36:10 GMT
• Title: Spontaneously sliding multipole spin density waves in cold atoms
• Authors: G. Labeyrie, J. G. M. Walker, G. R. M. Robb, R. Kaiser, and T. Ackemann
• Abstract summary: We report on the observation of spontaneously drifting coupled spin and quadrupolar density waves in the ground state of laser driven Rubidium atoms. The observations demonstrate a novel transport process in out-of-equilibrium magnetic systems.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: We report on the observation of spontaneously drifting coupled spin and quadrupolar density waves in the ground state of laser driven Rubidium atoms. These laser-cooled atomic ensembles exhibit spontaneous magnetism via light mediated interactions when submitted to optical feedback by a retro-reflecting mirror. Drift direction and chirality of the waves arise from spontaneous symmetry breaking. The observations demonstrate a novel transport process in out-of-equilibrium magnetic systems.

Related papers

• 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)
• Spin Rotations in a Bose-Einstein Condensate Driven by Counterflow and Spin-independent Interactions [0.0]
  We observe spin rotations caused by atomic collisions in a non-equilibrium Bose-condensed gas of $87$Rb. A local magnetodynamic model captures the salient features of the observed spin textures.
  arXiv  Detail & Related papers  (2023-08-30T14:46:50Z)
• Dynamics of molecular rotors in bulk superfluid helium [68.8204255655161]
  We report on the experimental study of the laser-induced rotation of helium dimers inside the superfluid $4mathrmHe$ bath at variable temperature. The observed temperature dependence suggests a non-equilibrium evolution of the quantum bath, accompanied by the emission of the wave of second sound.
  arXiv  Detail & Related papers  (2023-04-08T01:22:19Z)
• Variational theory of angulons and their rotational spectroscopy [0.6299766708197884]
  A quasiparticle formed by a quantum rotor dressed by the excitations of a many-body bath can be used to describe an impurity rotating in a fluid or solid environment. We reveal the quasiparticle properties, such as energies, quasiparticle weights and spectral functions, and show that our ansatz yields a persistent decrease in the impurity's rotational constant due to many-body dressing.
  arXiv  Detail & Related papers  (2022-11-15T11:46:05Z)
• 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)
• Motion induced excitation and electromagnetic radiation from an atom facing a thin mirror [62.997667081978825]
  We evaluate the probability of (de-)excitation and photon emission from a neutral, moving, non-relativistic atom, coupled to a quantum electromagnetic field and in the presence of a thin, perfectly conducting plane ("mirror") Results extend to a more realistic model, where the would-be electron was described by a scalar variable, coupled to an (also scalar) vacuum field.
  arXiv  Detail & Related papers  (2022-07-06T20:54:59Z)
• Radio-frequency manipulation of state populations in an entangled fluorine-muon-fluorine system [0.0]
  Entangled spin states are created by implanting muons into single crystal LiY0.95Ho0.05F4. The resulting states have well-defined energy levels allowing experimental manipulation of the state populations.
  arXiv  Detail & Related papers  (2022-04-11T13:09:36Z)
• Optical Stern-Gerlach effect via a single traveling-wave light [0.0]
  spin-orbit coupling induced chiral motion in atom deflection appears under the strong atom-light interaction. Superposition of distant matter waves connected to the arbitrary distribution of atom internal state could be predicted.
  arXiv  Detail & Related papers  (2022-04-06T14:35:49Z)
• Anisotropic electron-nuclear interactions in a rotating quantum spin bath [55.41644538483948]
  Spin-bath interactions are strongly anisotropic, and rapid physical rotation has long been used in solid-state nuclear magnetic resonance. We show that the interaction between electron spins of nitrogen-vacancy centers and a bath of $13$C nuclear spins introduces decoherence into the system. Our findings offer new insights into the use of physical rotation for quantum control with implications for quantum systems having motional and rotational degrees of freedom that are not fixed.
  arXiv  Detail & Related papers  (2021-05-16T06:15:00Z)
• 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)
• Coupling a mobile hole to an antiferromagnetic spin background: Transient dynamics of a magnetic polaron [0.0]
  In this work, we use a cold-atom quantum simulator to directly observe the formation dynamics and subsequent spreading of individual magnetic polarons. Measuring the density- and spin-resolved evolution of a single hole in a 2D Hubbard insulator with short-range antiferromagnetic correlations reveals fast initial delocalization and a dressing of the spin background. Our work enables the study of out-of-equilibrium emergent phenomena in the Fermi-Hubbard model, one dopant at a time.
  arXiv  Detail & Related papers  (2020-06-11T17:59:54Z)

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.