Deeply subrecoil two-dimensional Raman cooling

Abstract

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 velocity, corresponding to an effective temperature of 30 nK (0.15 T_rec). This technique can be useful to improve cold atom atomic clocks, and is particularly relevant for clocks in microgravity.

8 pages, 6 figures, submitted to Phys. Rev. A

References in corpus (2)

• Resolved-sideband Raman cooling to the ground state of an optical lattice
• Controlling the cold collision shift in high precision atomic interferometry

Cited by in corpus (11)

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• Stimulated Raman transitions via multiple atomic levels
• Improving Raman velocimetry of laser-cooled cesium atoms by spin-polarization
• Guided matter wave inertial sensing in a miniature physics package
• Efficient Two-dimensional Subrecoil Raman Cooling of Atoms in a Tripod Configuration
• Magnetically-controlled velocity selection in a cold atom sample using stimulated Raman transitions
• A widely tunable laser frequency offset lock with digital counting
• Robust two-dimensional subrecoil Raman cooling by adiabatic transfer in a tripod atomic system
• The STIRAP-based unitary decelerating and accelerating processes of a single free atom
• Laser cooling of unbound atoms in nondissipative optical lattices