Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: \Lambda-enhanced Sub-Doppler Cooling of Lithium Atoms in D1 Gray
  Molasses   Following the bichromatic sub-Doppler cooling scheme on the D1 line of 40K
recently demonstrated in (Fernandes et al. 2012), we introduce a similar
technique for 7Li atoms and obtain temperatures of 60 uK while capturing all of
the 5x10^8 atoms present from the previous stage. We investigate the influence
of the detuning between the the two cooling frequencies and observe a threefold
decrease of the temperature when the Raman condition is fulfilled. We interpret
this effect as arising from extra cooling due to long-lived coherences between
hyperfine states. Solving the optical Bloch equations for a simplified,
\Lambda-type three-level system we identify the presence of an efficient
cooling force near the Raman condition. After transfer into a quadrupole
magnetic trap, we measure a phase space density of ~10^-5. This laser cooling
offers a promising route for fast evaporation of lithium atoms to quantum
degeneracy in optical or magnetic traps.

36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn