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arXiv · 1005.3670

Realization of SU(2)*SU(6) Fermi System

Shintaro Taie·Yosuke Takasu·Seiji Sugawa·Rekishu Yamazaki·Takuya Tsujimoto·Ryo Murakami·Yoshiro Takahashi
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Abstract

We report the realization of a novel degenerate Fermi mixture with an SU(2)*SU(6) symmetry in a cold atomic gas. We successfully cool the mixture of the two fermionic isotopes of ytterbium 171Yb with the nuclear spin I=1/2 and 173Yb with I=5/2 below the Fermi temperature T_ F as 0.46T_F for 171Yb and 0.54T_F for 173Yb. The same scattering lengths for different spin components make this mixture featured with the novel SU(2)*SU(6) symmetry. The nuclear spin components are separately imaged by exploiting an optical Stern-Gerlach effect. In addition, the mixture is loaded into a 3D optical lattice to implement the SU(2)*SU(6) Hubbard model. This mixture will open the door to the study of novel quantum phases such as a spinor Bardeen-Cooper-Schrieffer-like fermionic superfluid.

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Shintaro Taie, Yosuke Takasu, Seiji Sugawa, Rekishu Yamazaki, Takuya Tsujimoto, Ryo Murakami, Yoshiro Takahashi. 2010-05-21. Realization of SU(2)*SU(6) Fermi System. https://doi.org/10.1103/physrevlett.105.190401

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