Efficient all-optical production of large $^6$Li quantum gases using D$_1$ gray-molasses cooling
| Autor: | Burchianti, A., Valtolina, G., Seman, J. A., Pace, E., De Pas, M., Inguscio, M., Zaccanti, M., Roati, G. |
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| Rok vydání: | 2014 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.90.043408 |
| Popis: | We use a gray molasses operating on the D$_1$ atomic transition to produce degenerate quantum gases of $^{6}$Li with a large number of atoms. This sub-Doppler cooling phase allows us to lower the initial temperature of 10$^9$ atoms from 500 to 40 $\mu$K in 2 ms. We observe that D$_1$ cooling remains effective into a high-intensity infrared dipole trap where two-state mixtures are evaporated to reach the degenerate regime. We produce molecular Bose-Einstein condensates of up to 5$\times$10$^{5}$ molecules and weakly-interacting degenerate Fermi gases of $7\times$10$^{5}$ atoms at $T/T_{F}<0.1$ with a typical experimental duty cycle of 11 seconds. Comment: 5 pages, 3 figures |
| Databáze: | arXiv |
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