Disentangling Pauli blocking of atomic decay from cooperative radiation and atomic motion in a 2D Fermi gas

• URL: http://arxiv.org/abs/2108.02819v1
• Date: Thu, 5 Aug 2021 19:06:10 GMT
• Title: Disentangling Pauli blocking of atomic decay from cooperative radiation and atomic motion in a 2D Fermi gas
• Authors: Thomas Bilitewski (1 and 2), Asier Pi\~neiro Orioli (1 and 2), Christian Sanner (1), Lindsay Sonderhouse (1), Ross B. Hutson (1), Lingfeng Yan (1), William R. Milner (1), Jun Ye (1), Ana Maria Rey (1 and 2) ((1) JILA, National Institute of Standards and Technology and Department of Physics, University of Colorado, Boulder, CO, 80309, USA, (2) Center for Theory of Quantum Matter, University of Colorado, Boulder, CO, 80309, USA)
• Abstract summary: We develop a theoretical framework capable of simultaneously accounting for all effects in a regime where prior approaches fail. We apply it to atoms in a single 2D pancake or arrays of pancakes featuring an effective $Lambda$ level structure.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The observation of Pauli blocking of atomic spontaneous decay via direct measurements of the atomic population requires the use of long-lived atomic gases where quantum statistics, atom recoil and cooperative radiative processes are all relevant. We develop a theoretical framework capable of simultaneously accounting for all these effects in a regime where prior theoretical approaches based on semi-classical non-interacting or interacting frozen atom approximations fail. We apply it to atoms in a single 2D pancake or arrays of pancakes featuring an effective $\Lambda$ level structure (one excited and two degenerate ground states). We identify a parameter window in which a factor of two extension in the atomic lifetime clearly attributable to Pauli blocking should be experimentally observable in deeply degenerate gases with $\sim 10^{3} $ atoms. Our predictions are supported by observation of a number-dependent excited state decay rate on the ${}^{1}\rm{S_0}-{}^{3}\rm{P_1}$ transition in $^{87}$Sr atoms.

Related papers

• Coherent Control of Spontaneous Emission for a giant driven $Λ $-type three-level atom [1.9976998521795732]
  Quantum optics with giant atoms provides a new approach for implementing optical memory devices at the atomic scale. We study the relaxation dynamics of a single driven three-level atom interacting with a one-dimensional waveguide.
  arXiv  Detail & Related papers  (2024-05-30T11:03:08Z)
• Non-Hermitian $p$-wave superfluid and effects of the inelastic three-body loss in a one-dimensional spin-polarized Fermi gas [0.0]
  We investigate non-Hermitian $p$-wave Fermi superfluidity in one-dimensional spin-polarized Fermi gases. Considering an imaginary atom-dimer coupling, we discuss the stability of the superfluid state against the atomic loss effect.
  arXiv  Detail & Related papers  (2023-12-25T13:21:52Z)
• Coherence time of 20 s with a single cesium atom in an optical dipole trap [23.434915938124956]
  We analyze the decoherence between two ground electronic states of an optically trapped atom. A new decoherence mechanism, phonon-jumping-induced decoherence (PJID) is discovered and verified experimentally.
  arXiv  Detail & Related papers  (2023-12-18T13:42:46Z)
• 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)
• Matter-wave collimation to picokelvin energies with scattering length and potential shape control [32.94471451530934]
  We investigate the impact of atomic interactions on collimation by applying a lensing protocol to a $39$K Bose-Einstein condensate. Our results pave the way to realize ensembles with more than $1times105$ atoms and 3D energies in the two-digit pK range.
  arXiv  Detail & Related papers  (2023-10-06T17:20:27Z)
• 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)
• 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)
• Nuclear spin squeezing by continuous quantum non-demolition measurement: a theoretical study [0.0]
  We take advantage of the weak coupling of ground-state helium-3 nuclear spin to its environment to produce macroscopic quantum states. We perform a quantum non-demolition measurement of a transverse component of the polarized collective nuclear spin. We find a limit $propto(gamma_alpha/Gamma_rm sq)1/2$ on the conditional variance reached in a time.
  arXiv  Detail & Related papers  (2020-12-29T09:56:30Z)
• Probing spin correlations in a Bose-Einstein condensate near the single atom level [26.500149465292246]
  We produce and characterize a two-mode squeezed vacuum state in a sodium spin 1 Bose-Einstein condensate. A novel fluorescence imaging technique with sensitivity $Delta N sim 1.6$ atom enables us to demonstrate the role of quantum fluctuations in the initial dynamics.
  arXiv  Detail & Related papers  (2020-04-20T00:50:47Z)
• Hyperfine and quadrupole interactions for Dy isotopes in DyPc$_2$ molecules [77.57930329012771]
  Nuclear spin levels play an important role in understanding magnetization dynamics and implementation and control of quantum bits in lanthanide-based single-molecule magnets. We investigate the hyperfine and nuclear quadrupole interactions for $161$Dy and $163$Dy nucleus in anionic DyPc$.
  arXiv  Detail & Related papers  (2020-02-12T18:25:31Z)

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.