All-Optical Production of Quantum Degeneracy and Molecular Bose–Einstein Condensation of 6 Li
DENG Shu-Jin, DIAO Peng-Peng, YU Qian-Li, WU Hai-Bin**
State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062
Abstract ：We achieve a highly degenerate and strongly interacting Fermi gas in a mixture of the two lowest hyperfine states of 6 Li by direct evaporative cooling in a high power crossed optical dipole trap. The trap is loaded from a large atom number magneto-optical trap realized by a laser system of 2.5-W intracavity-frequency-doubled light output at 671 nm. With this system, we also demonstrate the production of a molecular Bose–Einstein condensate (mBEC) of 6 Li2 , and observe the anisotropic expansion of Fermi gases in the so-called BEC–Bardeen–Cooper–Schrieffer crossover regime.
收稿日期: 2015-01-19
出版日期: 2015-06-01
[1] Bloch I and Zwerger W 2008 Rev. Mod. Phys. 80 885 2008 Rev. Mod. Phys. 80 1215 2004 Am. Sci. 92 238 BCS-BEC Crossover Unitary Fermi Gas 836 (New York: Springer)2002 Science 298 2179 2001 Phys. Rev. A 64 051403 2003 Science 302 2101 2011 New J. Phys. 13 075007 2010 Nature 463 1057 2010 New J. Phys. 12 063038 2005 Phys. Rev. Lett. 95 120402 2004 Phys. Rev. A 69 033603 2003 Nature 426 537 2003 Phys. Rev. Lett. 91 250401 2004 Phys. Rev. Lett. 93 250401 2005 Phys. Rev. Lett. 95 020404 2004 Phys. Rev. Lett. 93 090404 2011 Science 331 58 2014 Phys. Rev. Lett. 112 040405
[1]
.
[2]
.
[3]
.
[4]
.
[5]
.
[6]
.
[7]
.
[8]
.
[9]
.
[10]
.
[11]
.
[12]
.
[13]
.
[14]
TIE Lu, XUE Ju-Kui** . The Anisotropy of Dipolar Condensate in One-Dimensional Optical Lattices
[15]
YOU Yi-Zhuang. Ground State Energy of One-Dimensional δ -Function Interacting Bose and Fermi Gas
2015, Vol. 32 
