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Related papers: Two-photon and EIT-assisted Doppler cooling in a t…

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We propose a new laser cooling method for atomic species whose level structure makes traditional laser cooling difficult. For instance, laser cooling of hydrogen requires vacuum-ultraviolet laser light, while multielectron atoms need laser…

Quantum Physics · Physics 2009-11-10 David Kielpinski

Cooling of particles to mK-temperatures is essential for a variety of experiments with trapped charged particles. However, many species of interest lack suitable electronic transitions for direct laser cooling. We study theoretically the…

The theory and experiments concerned with the electron-ion thermal relaxation and melting of overheated crystal lattice constitute the subject of this paper. The physical model includes two-temperature equation of state, many-body…

This paper analyses the cooling of a single particle in a harmonic trap with red-detuned laser light with fewer approximations than previously done in the literature. We avoid the adiabatic elimination of the excited atomic state but are…

Quantum Physics · Physics 2015-05-27 Tony Blake , Andreas Kurcz , Norah S. Saleem , Almut Beige

In this paper, we develop an analytical approach to Doppler cooling of atoms by one- or two-photon transitions when the natural width of the excited level is so small that the process leads to a Doppler temperature comparable to the recoil…

Quantum Physics · Physics 2016-08-16 Véronique Zehnlé , Jean Claude Garreau

Building a refrigerator based on the conversion of heat into optical energy is an ongoing engineering challenge. Under well-defined conditions, spontaneous anti-Stokes fluorescence of a dopant material in a host matrix is capable of…

Optics · Physics 2009-11-13 Peter Muys

We demonstrate optical cycling and sub-Doppler laser cooling of a cryogenic buffer-gas beam of calcium monohydride (CaH) molecules. We measure vibrational branching ratios for laser cooling transitions for both excited electronic states A…

Atomic Physics · Physics 2022-08-24 S. F. Vázquez-Carson , Q. Sun , J. Dai , D. Mitra , T. Zelevinsky

We analyse a laser assisted sympathetic cooling scheme for atoms within the lowest Bloch band of an optical lattice. This scheme borrows ideas from sub-recoil laser cooling, implementing them in a new context in which the atoms in the…

Other Condensed Matter · Physics 2009-01-15 A. Griessner , A. J. Daley , S. R. Clark , D. Jaksch , P. Zoller

The quantum-mechanical and thermodynamic properties of a 3-level molecular cooling cycle are derived. An inadequacy of earlier models is rectified in accounting for the spontaneous emission and absorption associated with the coupling to the…

Quantum Physics · Physics 2009-11-07 Jose P. Palao , Ronnie Kosloff , Jeffrey M. Gordon

We propose and demonstrate a novel laser cooling mechanism applicable to particles with narrow-linewidth optical transitions. By sweeping the frequency of counter-propagating laser beams in a sawtooth manner, we cause adiabatic transfer…

The ability to cool atoms below the Doppler limit -- the minimum temperature reachable by Doppler cooling -- has been essential to most experiments with quantum degenerate gases, optical lattices and atomic fountains, among many other…

Atomic Physics · Physics 2018-01-17 S. Truppe , H. J. Williams , M. Hambach , L. Caldwell , N. J. Fitch , E. A. Hinds , B. E. Sauer , M. R. Tarbutt

Cooling of systems to sub-kelvin temperatures is usually done using either a cold bath of particles or spontaneous photon scattering from a laser field; in either case, cooling is driven by interaction with a well-ordered, cold (i.e. low…

Quantum Physics · Physics 2023-05-19 Amanda Younes , Wesley C. Campbell

We study resolved sideband laser cooling of a one-dimensional optical lattice with one atom per site, and in particular the effect of the dipole interaction between radiating atoms. For simplicity, we consider the case where only a single…

Quantum Gases · Physics 2010-06-17 Rebecca N. Palmer , Almut Beige

A near-minimal instance of optical cooling is experimentally presented wherein the internal-state entropy of a single atom is reduced more than twofold by illuminating it with broadband, incoherent light. Since the rate of optical pumping…

Quantum Physics · Physics 2024-11-08 Amanda Younes , Randall Putnam , Paul Hamilton , Wesley C. Campbell

We theoretically characterize the semiclassical dynamics of an ensemble of atoms after a sudden quench across a driven-dissipative second-order phase transition. The atoms are driven by a laser and interact via conservative and dissipative…

Quantum Physics · Physics 2016-08-24 Stefan Schütz , Simon B. Jäger , Giovanna Morigi

We study theoretically the behavior of laser-cooled calcium monofluoride (CaF) molecules in an optical molasses and magneto-optical trap (MOT), and compare our results to recent experiments. We use multi-level optical Bloch equations to…

Atomic Physics · Physics 2021-05-18 J. A. Devlin , M. R. Tarbutt

We report on Bose-Einstein condensation (BEC) in a gas of strontium atoms, using laser cooling as the only cooling mechanism. The condensate is formed within a sample that is continuously Doppler cooled to below 1\muK on a narrow-linewidth…

Quantum Gases · Physics 2013-09-24 Simon Stellmer , Benjamin Pasquiou , Rudolf Grimm , Florian Schreck

We demonstrate cooling of the motion of a single atom confined by a dipole trap inside a high-finesse optical resonator. Cooling of the vibrational motion results from EIT-like interference in an atomic \Lambda-type configuration, where one…

Laser-cooled atoms coupled to nanophotonic structures constitute a powerful research platform for the exploration of new regimes of light-matter interaction. While the initialization of the atomic internal degrees of freedom in these…

Quantum Physics · Physics 2018-09-12 Y. Meng , A. Dareau , P. Schneeweiss , A. Rauschenbeutel

The efficiency of laser-cooling relies on the existence of an almost closed optical-transition cycle in the energy spectrum of the considered species. In this respect rare-earth elements exhibit many transitions which are likely to induce…

Atomic Physics · Physics 2017-04-11 Maxence Lepers , Ye Hong , Jean-François Wyart , Olivier Dulieu