Deeply subrecoil two-dimensional Raman cooling

Deeply subrecoil two-dimensional Raman cooling

We report the implementation of a two-dimensional Raman cooling scheme using sequential excitations along the orthogonal axes. Using square pulses, we have cooled a cloud of ultracold cesium atoms down to an rms velocity spread of 0.39(5) recoil velocities, corresponding to an effective transverse t...

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Veröffentlicht in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2004-10, Vol.70 (4), Article 043405
Hauptverfasser: Boyer, V., Lising, L. J., Rolston, S. L., Phillips, W. D.
Format: Artikel
Sprache:eng
Schlagworte:
ATOMIC AND MOLECULAR PHYSICS
ATOMIC CLOCKS
ATOMS
CESIUM
COOLING
EXCITATION
IMPLEMENTATION
LASER RADIATION
PULSES
TWO-DIMENSIONAL CALCULATIONS
VELOCITY
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Beschreibung
Zusammenfassung:We report the implementation of a two-dimensional Raman cooling scheme using sequential excitations along the orthogonal axes. Using square pulses, we have cooled a cloud of ultracold cesium atoms down to an rms velocity spread of 0.39(5) recoil velocities, corresponding to an effective transverse temperature of 30 nK (0.15T{sub rec}). This technique can be useful to improve cold-atom atomic clocks and is particularly relevant for clocks in microgravity.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.70.043405