Coherent Three-Photon Excitation of the Strontium Clock Transition

Abstract

We demonstrate coherent three-photon excitation of the strontium clock transition with a contrast of 51(12)% using a Bose-Einstein condensate. We follow it up with a demonstration of three-photon STIRAP-like transfer, overcoming the typical limitations of this technique to odd-level numbers. We also measure the two-body loss coefficient of ${}^{84}$Sr clock-state atoms. Our work constitutes an essential step towards outcoupling a continuous atom laser beam and provides a fast excitation mechanism for quantum simulation using bosonic alkaline-earth-like atoms.

8 pages, 6 figures, neatly condensed

References in corpus (10)

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Cited by in corpus (2)

• Realization of a fast triple-magic all-optical qutrit in strontium-88
• Collinear Three-Photon Excitation of a Strongly Forbidden Optical Clock Transition