rf-field-induced Feshbach resonances

Journal Article · Sat May 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.050701· OSTI ID:21408758

Tscherbul, T V; Dalgarno, A ^[1]; Calarco, T ^[2]; Lesanovsky, I ^[3]; Krems, R V ^[4]; Schmiedmayer, J ^[5]

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1. Harvard-MIT Center for Ultracold Atoms, Cambridge, Massachusetts 02138 (United States)
2. Institute of Quantum Information Processing, Ulm University, D-89081 Ulm (Germany)
3. School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD (United Kingdom)
4. Department of Chemistry, University of British Columbia, Vancouver BC, V6T 1Z1 (Canada)
5. Atominstitut, TU-Wien, Stadionallee 2, 1020 Vienna (Austria)

A rigorous quantum theory of atomic collisions in the presence of radio frequency (rf) magnetic fields is developed and applied to elucidate the effects of combined dc and rf magnetic fields on ultracold collisions of Rb atoms. We show that rf fields can be used to induce Feshbach resonances, which can be tuned by varying the amplitude and frequency of the rf field. The rf-induced Feshbach resonances occur also in collisions of atoms in low-field-seeking states at moderate rf field strengths easily available in atom chip experiments, which opens up the world of tunable interactions to magnetically trappable atomic quantum gases.

• OSTI ID: 21408758
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
ATOM COLLISIONS
ATOMS
COLLISIONS
ELECTROMAGNETIC RADIATION
INTERACTIONS
MAGNETIC FIELDS
RADIATIONS
RADIOWAVE RADIATION
RESONANCE