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Tunable, species-dependent traps for degenerate mixtures

December 14, 2015 - 2:00pm
Speaker: 
Varun Vaidya
Institution: 
UMD
Mixtures of degenerate gases are a platform for creating and studying polar molecules, impurities in a BEC and are promising candidates for implementing novel cooling schemes to reduce the entropy of a lattice gas. While a number of degenerate mixtures have been produced in a variety of different traps, independent control of the trap parameters for each species remains challenging and is often crucial to perform efficient cooling. 
 
This talk will discuss the implementation of a tunable, species-selective trap for rubidium and ytterbium atoms and present two experiments performed towards this goal. This first is a precision measurement of a tune-out wavelength in rubidium where its AC stark shift vanishes. The second experiment uses this wavelength of light to form a species-dependent trap and bring a gas of bosonic rubidium-87 and fermionic ytterbium-171 atoms to degeneracy.
 
Dissertation Committee Chair: Prof. Steve Rolston
 
Committee: 
Dr. Gretchen Campbell
Dr. Trey Porto
Dr. Luis Orozco
Dr. Mario Dagenais
PSC 1136
College Park, MD 20742