Creation of ultracold ⁸⁷RbCs molecules in the rovibrational ground state

2014/09/30 by Peter K. Molony, Philip D. Gregory, Zhonghua Ji +6 · 1 citation
Physics and Astronomy · #physics.atom-ph

paper · pdf · doi:10.1103/physrevlett.113.255301

5 pages, 4 figures + supplementary material

arxiv created 2014/11/04 · arxiv updated 2015/06/22

Abstract

We report the creation of a sample of over 1000 ultracold ⁸⁷RbCs molecules in the lowest rovibrational ground state, from an atomic mixture of ⁸⁷Rb and Cs, by magnetoassociation on an interspecies Feshbach resonance followed by stimulated Raman adiabatic passage (STIRAP). We measure the binding energy of the RbCs molecule to be h c × 3811.576(1) cm^-1 and the |v''=0, J''=0> to |v''=0, J''=2> splitting to be h × 2940.09(6) MHz. Stark spectroscopy of the rovibrational ground state yields an electric dipole moment of 1.225(3)(8) D, where the values in parentheses are the statistical and systematic uncertainties, respectively. We demonstrate that a space-fixed dipole moment of 0.355(2)(4) D is accessible in RbCs, which is substantially higher than in previous work.

Cited by

• Dark Superradiance in Cavity-Coupled Polar Molecular Bose-Einstein Condensates

Related

• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• An association sequence suitable for producing ground-state RbCs molecules in optical lattices
• Creation of an ultracold gas of ground-state ²³\rmNa⁸⁷\rmRb molecules
• Hyperfine-resolved optical spectroscopy of ultracold ⁸⁷Rb¹³³Cs molecules: the b³Π₀ metastable state
• Formation of ultracold ³⁹K¹³³Cs Feshbach molecules