Laser Cooling to the Zero-Point Energy of Motion

Diedrich, F.; Bergquist, J. C.; Itano, Wayne M.; Wineland, David J.

doi:10.1103/physrevlett.62.403

Cited by 748 publications

(592 citation statements)

References 14 publications

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“…Efficient ground state laser cooling of single trapped ions has been achieved using two-level sideband cooling [7] and Raman sideband cooling [8], and recently these methods have been transferred to two ions [9] and to atomic gases [10]. These techniques involve laser excitation of an atom with two internal levels jg͘ and je͘, which in the case of Raman sideband cooling is designed from a L-shaped three-level atom by Raman coupling [11,12].…”

Section: Ground State Laser Cooling Using Electromagnetically Inducedmentioning

confidence: 99%

Ground State Laser Cooling Using Electromagnetically Induced Transparency

2000

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A laser cooling method for trapped atoms is described which achieves ground state cooling by exploiting quantum interference in a driven L-shaped arrangement of atomic levels. The scheme is technically simpler than existing methods of sideband cooling, yet it can be significantly more efficient, in particular when several motional modes are involved, and it does not impose restrictions on the transition linewidth. We study the full quantum mechanical model of the cooling process for one motional degree of freedom and show that a rate equation provides a good approximation.

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Section: Ground State Laser Cooling Using Electromagnetically Inducedmentioning

confidence: 99%

Ground State Laser Cooling Using Electromagnetically Induced Transparency

2000

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“…The technique that we use is Zeemanshift degenerate-Raman-sideband cooling. Sideband cooling was first applied to trapped ions [8][9][10]. Later, following a theoretical proposal by Taïeb et al [11], it was adapted to neutral atoms in optical lattices by several groups [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Laser collimation of a continuous beam of cold atoms using Zeeman-shift degenerate-Raman-sideband cooling

et al. 2004

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In this article we report on the use of degenerate-Raman-sideband cooling for the collimation of a continuous beam of cold cesium atoms in a fountain geometry. Thanks to this powerful cooling technique we have reduced the atomic beam transverse temperature from 60 K to 1.6 K in a few milliseconds. The longitudinal temperature of 80 K is not modified. The flux density, measured after a parabolic flight of 0.57 s, has been increased by a factor of 4 to approximately 10 7 at. s −1 cm −2 and we have identified a Sisyphus-like precooling mechanism which should make it possible to increase this flux density by an order of magnitude.

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“…Also, there are some experiments that have shown decoherence of the superposition of states due to the interaction of the system with the environment [14]. After introducing of the JC model, attention has been focused on some dissipative variants of this model in the last three decades [15,16,17,18,19]. The experiments with highly excited Rydberg atoms allowed some of the predictions of the extended versions of the JC model to be observed.…”

Section: Introductionmentioning

confidence: 99%

“…The Hamiltonians (1) describes a nonlinear transition from|e ↔ |g in the two level system through intensity dependent coupling. Now, we consider the master equation which describes only the atomic damping of thermal reservoir [32,33,34] by the parameter γ A , given by…”

Section: The Model and Solution Of Master Equationmentioning

confidence: 99%