Increased Atom-Cavity Coupling through Cooling-Induced Atomic Reorganization

• URL: http://arxiv.org/abs/2310.17090v1
• Date: Sun, 15 Oct 2023 08:11:02 GMT
• Title: Increased Atom-Cavity Coupling through Cooling-Induced Atomic Reorganization
• Authors: Chi Shu, Simone Colombo, Zeyang Li, Albert Adiyatullin, Enrique Mendez, Edwin Pedrozo-Pe\~nafiel, and Vladan Vuleti\'c
• Abstract summary: Raman sideband cooling achieves 93% optical pi-pulse fidelity on the clock transition 1S0 -> 3P0. During cooling, the atoms self-organize into locations with maximal atom-cavity-coupling.
• Score: 1.7841368039153678
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: The strong coupling of atoms to optical cavities can improve optical lattice clocks as the cavity enables metrologically useful collective atomic entanglement and high-fidelity measurement. To this end, it is necessary to cool the ensemble to suppress motional broadening, and advantageous to maximize and homogenize the atom-cavity coupling. We demonstrate resolved Raman sideband cooling via the cavity as a method that can simultaneously achieve both goals. In 200 ms, we cool 171Yb atoms to an average vibration number <nx> = 0.23(7) in the tightly binding direction, resulting in 93% optical {\pi}-pulse fidelity on the clock transition 1S0 -> 3P0. During cooling, the atoms self-organize into locations with maximal atom-cavity-coupling, which will improve quantum metrology applications.

Related papers

• Self-Ordering, Cooling and Lasing in an Ensemble of Clock Atoms [0.0]
  Active atomic clocks are predicted to provide better short-term stability and robustness against thermal fluctuations than typical feedback-based optical atomic clocks. We study spatial self-organization in a transversely driven ensemble of clock atoms inside an optical resonator and coherent light emission from the cavity.
  arXiv  Detail & Related papers  (2024-07-22T20:54:03Z)
• Microwave-based quantum control and coherence protection of tin-vacancy spin qubits in a strain-tuned diamond membrane heterostructure [54.501132156894435]
  Tin-vacancy center (SnV) in diamond is a promising spin-photon interface with desirable optical and spin properties at 1.7 K. We introduce a new platform that overcomes these challenges - SnV centers in uniformly strained thin diamond membranes. The presence of crystal strain suppresses temperature dependent dephasing processes, leading to a considerable improvement of the coherence time up to 223 $mu$s at 4 K.
  arXiv  Detail & Related papers  (2023-07-21T21:40:21Z)
• Continuous collective strong coupling between atoms and a high finesse optical cavity [0.0]
  We demonstrate continuous loading of strontium atoms into a high finesse ring cavity. The ring cavity allows us to realize a deterministic conveyor belt to transport atoms away from the loading region. This work opens the path to the creation of a continuous wave superradiant laser with millihertz linewidth.
  arXiv  Detail & Related papers  (2022-10-31T21:53:37Z)
• Enhanced dark-state sideband cooling in trapped atoms via photon-mediated dipole-dipole interactions [4.915587669065746]
  We present an enhanced dark-state sideband cooling in trapped atoms utilizing photon-mediated dipole-dipole interactions among them. By placing the atoms at the magic interparticle distances, we manifest an outperformed cooling behavior in the target atom. Our results provide insights to subrecoil cooling of atoms with collective and light-induced long-range dipole-dipole interactions, and pave the way toward implementing genuine quantum operations in multiple quantum registers.
  arXiv  Detail & Related papers  (2022-10-12T13:33:20Z)
• Tuning long-range fermion-mediated interactions in cold-atom quantum simulators [68.8204255655161]
  Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
  arXiv  Detail & Related papers  (2022-03-31T13:32:12Z)
• Cavity Sub- and Superradiance Enhanced Ramsey Spectroscopy [0.0]
  Ramsey spectroscopy in large, dense ensembles of ultra-cold atoms trapped in optical lattices suffers from dipole-dipole interaction induced shifts and collective superradiance limiting its precision and accuracy. We propose a novel geometry implementing fast signal readout with minimal heating for large atom numbers at lower densities via an optical cavity operated in the weak single atom but strong collective coupling regime.
  arXiv  Detail & Related papers  (2022-01-21T14:57:35Z)
• Spectral multiplexing of telecom emitters with stable transition frequency [68.8204255655161]
  coherent emitters can be entangled over large distances using photonic channels. We observe around 100 individual erbium emitters using a Fabry-Perot resonator with an embedded 19 micrometer thin crystalline membrane. Our results constitute an important step towards frequency-multiplexed quantum-network nodes operating directly at a telecommunication wavelength.
  arXiv  Detail & Related papers  (2021-10-18T15:39:07Z)
• Tunable directional emission and collective dissipation with quantum metasurfaces [62.997667081978825]
  Subradiant excitations propagate through the atomic array with very long lifetimes. We demonstrate that one can harness these excitations to obtain tunable directional emission patterns. We also benchmark how these directional emission patterns translate into collective, anisotropic dissipative couplings.
  arXiv  Detail & Related papers  (2021-07-01T14:26:33Z)
• Site-dependent selection of atoms for homogeneous atom-cavity coupling [0.0]
  We select atoms by imposing an AC Stark shift on the ground state hyperfine microwave transition frequency with light injected into the cavity. We induce a spin flip with microwaves that are resonant for atoms that are near maximally coupled to the cavity mode of interest, after which, we use radiation pressure forces to remove from the cavity all the atoms in the initial spin state.
  arXiv  Detail & Related papers  (2021-04-02T19:05:19Z)
• Open-cavity in closed-cycle cryostat as a quantum optics platform [47.50219326456544]
  We present a fiber-based open Fabry-P'erot cavity in a closed-cycle cryostat exhibiting ultra-high mechanical stability. This set of results manifests open-cavity in a closed-cycle cryostat as a versatile and powerful platform for low-temperature cavity QED experiments.
  arXiv  Detail & Related papers  (2021-03-09T18:41:48Z)
• Chemical tuning of spin clock transitions in molecular monomers based on nuclear spin-free Ni(II) [52.259804540075514]
  We report the existence of a sizeable quantum tunnelling splitting between the two lowest electronic spin levels of mononuclear Ni complexes. The level anti-crossing, or magnetic clock transition, associated with this gap has been directly monitored by heat capacity experiments. The comparison of these results with those obtained for a Co derivative, for which tunnelling is forbidden by symmetry, shows that the clock transition leads to an effective suppression of intermolecular spin-spin interactions.
  arXiv  Detail & Related papers  (2021-03-04T13:31:40Z)

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.