期刊
PHYSICAL REVIEW LETTERS
卷 114, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.205302
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资金
- NSF
- AFOSR PECASE
- ARO
- ARO MURI
- AFOSR MURI
- David and Lucile Packard Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [0969311, 1125846] Funding Source: National Science Foundation
We report on the creation of an ultracold dipolar gas of fermionic (NaK)-Na-23-K-40 molecules in their absolute rovibrational and hyperfine ground state. Starting from weakly bound Feshbach molecules, we demonstrate hyperfine resolved two-photon transfer into the singlet Chi (1)Sigma+vertical bar nu = 0; J = 0 > ground state, coherently bridging a binding energy difference of 0.65 eV via stimulated rapid adiabatic passage. The spin-polarized, nearly quantum degenerate molecular gas displays a lifetime longer than 2.5 s, highlighting NaK's stability against two-body chemical reactions. A homogeneous electric field is applied to induce a dipole moment of up to 0.8 D. With these advances, the exploration of many-body physics with strongly dipolar Fermi gases of 23Na40K molecules is within experimental reach.
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