Formation and detection of ultracold ground-state polar molecules
2004; American Physical Society; Volume: 70; Issue: 2 Linguagem: Inglês
10.1103/physreva.70.021402
ISSN1538-4446
AutoresC. Haimberger, Jan Kleinert, M. Bhattacharya, N. P. Bigelow,
Tópico(s)Quantum, superfluid, helium dynamics
ResumoWe report on the formation of translationally cold $\mathrm{NaCs}$ molecules starting from a laser-cooled atomic vapor of $\mathrm{Na}$ and $\mathrm{Cs}$ atoms. Colliding atoms are transferred into bound molecular states in a two-step photoactivated process in which the atoms are first photoassociated by trap photons into an excited state molecular complex and then allowed to decay into a bound molecular ground state. Time-of-flight measurements show a translational temperature $T=260\ifmmode\pm\else\textpm\fi{}130\phantom{\rule{0.3em}{0ex}}\ensuremath{\mu}\mathrm{K}$ that reflects the measured temperature of the initial atomic gas.
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