Weak localization of light in hot atomic vapors

• URL: http://arxiv.org/abs/2107.03110v2
• Date: Sat, 30 Oct 2021 12:44:15 GMT
• Title: Weak localization of light in hot atomic vapors
• Authors: N. Cherroret, M. Hemmerling, G. Labeyrie, D. Delande, J.T.M. Walraven and R. Kaiser
• Abstract summary: We compute the coherent backscattering peak, assuming high temperature and taking into account the quantum level structure of the atomic scatterers. It is found that the decoherence due to thermal motion can be partially counterbalanced by working at large laser detuning and using small atomic cells with an elongated geometry.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We theoretically explore the possibility to detect weak localization of light in a hot atomic vapor, where one usually expects the fast thermal motion of the atoms to destroy any interference in multiple scattering. To this end, we compute the coherent backscattering peak, assuming high temperature and taking into account the quantum level structure of the atomic scatterers. It is found that the decoherence due to thermal motion can be partially counterbalanced by working at large laser detuning and using small atomic cells with an elongated geometry. Under these conditions, our estimates suggest that weak localization in a hot vapor should be within reach of experimental detection.

Related papers

• Spatial averaging for light reflection and transmission through cold atom arrays [0.0]
  We investigate the role that the spatial spread of atoms plays in the transmission and reflection of weak light from atom arrays. We find that the coherence is not relevant when the light is weak and the electronic states evolve on time scales shorter than the oscillation period of the atoms in their traps.
  arXiv  Detail & Related papers  (2024-10-24T15:41:52Z)
• Strongly subradiant states in planar atomic arrays [39.58317527488534]
  We study collective dipolar oscillations in finite planar arrays of quantum emitters in free space. We show that the external coupling between the collective states associated with the symmetry of the array and with the quasi-flat dispersion of the corresponding infinite lattice plays a crucial role in the boost of their radiative lifetime.
  arXiv  Detail & Related papers  (2023-10-10T17:06:19Z)
• Threshold studies for a hot beam superradiant laser including an atomic guiding potential [0.0]
  Recent theoretical predictions hint at an implementation of a superradiant laser based on narrow optical clock transitions. We show that the temperature threshold can be significantly increased by using more atoms. Interestingly we see that higher order atom-field and direct atom-atom quantum correlations play only a minor role in the laser dynamics.
  arXiv  Detail & Related papers  (2023-08-10T14:05:09Z)
• Collectively enhanced Ramsey readout by cavity sub- to superradiant transition [0.0]
  We experimentally confirm a minimum threshold for superradiant emission on a narrow optical transition. A $pi/2$-pulse places the atoms in a subradiant state, protected from collective cavity decay. The scheme is a fundamentally new approach to atomic state readout characterized by its speed, simplicity, and high sensitivity.
  arXiv  Detail & Related papers  (2023-06-21T20:18:28Z)
• Observation of false vacuum decay via bubble formation in ferromagnetic superfluids [47.187609203210705]
  In quantum field theory, the decay of an extended metastable state into the real ground state is known as false vacuum decay'' Here, we observe bubble nucleation in isolated and highly controllable superfluid atomic systems.
  arXiv  Detail & Related papers  (2023-05-09T07:41:08Z)
• Precision Spectroscopy of Fast, Hot Exotic Isotopes Using Machine Learning Assisted Event-by-Event Doppler Correction [0.6999740786886537]
  We propose an experimental scheme for performing sensitive, high-precision laser spectroscopy studies on fast exotic isotopes. The ability to perform in-flight spectroscopy, directly on highly energetic beams, offers unique opportunities to study short-lived isotopes with lifetimes in the millisecond range.
  arXiv  Detail & Related papers  (2023-04-25T19:53:59Z)
• From classical to quantum loss of light coherence [0.0]
  Light is a precious tool to probe matter, as it captures microscopic and macroscopic information on the system. We report on the transition from a thermal (classical) to a spontaneous emission (quantum) mechanism for the loss of light coherence from a macroscopic atomic cloud.
  arXiv  Detail & Related papers  (2022-10-03T15:12:50Z)
• Visualizing spinon Fermi surfaces with time-dependent spectroscopy [62.997667081978825]
  We propose applying time-dependent photo-emission spectroscopy, an established tool in solid state systems, in cold atom quantum simulators. We show in exact diagonalization simulations of the one-dimensional $t-J$ model that the spinons start to populate previously unoccupied states in an effective band structure. The dependence of the spectral function on the time after the pump pulse reveals collective interactions among spinons.
  arXiv  Detail & Related papers  (2021-05-27T18:00:02Z)
• Taking the temperature of a pure quantum state [55.41644538483948]
  Temperature is a deceptively simple concept that still raises deep questions at the forefront of quantum physics research. We propose a scheme to measure the temperature of such pure states through quantum interference.
  arXiv  Detail & Related papers  (2021-03-30T18:18:37Z)
• 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)
• Nitrogen-vacancy defect emission spectra in the vicinity of an adjustable silver mirror [62.997667081978825]
  Optical emitters of quantum radiation in the solid state are important building blocks for emerging technologies. We experimentally study the emission spectrum of an ensemble of nitrogen-vacancy defects implanted around 8nm below the planar diamond surface.
  arXiv  Detail & Related papers  (2020-03-31T10:43:26Z)

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.