Hannover 2013 – scientific programme

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A: Fachverband Atomphysik

A 29: Poster: Ultra-cold atoms, ions and BEC (with Q)

A 29.5: Poster

Wednesday, March 20, 2013, 16:00–18:30, Empore Lichthof

Collision studies in ultracold calcium atoms — •Purbasha Halder and Andreas Hemmerich — Institut für Laserphysik, Universität Hamburg

We present collision studies of optically trapped calcium atoms in their long-lived triplet states and discuss the feasability of achieving Bose-Einstein condensation in these states by evaporative cooling methods. The metastable states of alkaline earth and rare earth elements have novel elastic and inelastic scattering properties [1], and have important implications for applications like time metrology and lattice-based quantum computing.

The atoms are prepared by an alternative method analogous to the one used to create a ground state BEC [2].

[1] V. Kokoouline, R. Santra, and C. Greene, Phys. Rev. Lett. 90, 253201 (2003).

[2] P. Halder, C.-Y. Yang and A. Hemmerich, Phys. Rev. A 85, 031603 (2012).