Hannover 2013 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 6: Ultracold atoms and molecules

Q 6.4: Talk

Monday, March 18, 2013, 12:00–12:15, A 310

A raman laser system for adiabatic photo association of NaK molecules — •Diana Amaro, Nikolaus Buchheim, Zhenkai Lu, Tobias Schneider, Immanuel Bloch, and Christoph Gohle — Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching

Ultra cold quantum gases with large dipolar interaction or large polarizability that are recently becoming available promise exciting new possibilities. Self assembled lattices of polarized particles supporting phonon modes will provide opportunities to simulate an even broader range of solid state physics phenomena [1]. New classes of many body phases (like super solids and stripe phases) are on the horizon and ferroelectric phases of highly polarizable systems are expected [2].

One such system is the NaK bialkali with a ground state dipole moment of 2.8 Debeye. In order to create these molecules at sufficiently high phase space density, an adiabatic route from a near degenerate mixture of sodium and potassium to the molecular electronic, rotational and vibrational ground state bridging 150THz is required. We have built a highly stable raman laser system by stabilizing two diode lasers to a ultra stable fabry perot transfer cavity.

[1] Pupillo, G., Micheli, A., Büchler, H. P., & Zoller, P. (2008). Condensed Matter Physics with Cold Polar Molecules. arXiv:0805.1896.

[2] Iskin, M., & Sá de Melo, C. (2007). Ultracold Heteronuclear Molecules and Ferroelectric Superfluids. Physical Review Letters, 99(11), 110402.