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Two-orbital SU(N) magnetism with ultracold alkaline-earth atoms | | A. V. Gorshkov
; M. Hermele
; V. Gurarie
; C. Xu
; P. S. Julienne
; J. Ye
; P. Zoller
; E. Demler
; M. D. Lukin
; A. M. Rey
; | | Date: |
18 May 2009 | | Abstract: | Fermionic alkaline-earth(-like) atoms -- atoms with two valence electrons --
such as 87Sr and 171Yb, have unique properties that make them attractive
candidates for the realization of novel atomic clocks and degenerate quantum
gases. At the same time, they are attracting considerable theoretical attention
in the context of quantum information processing. Here we demonstrate that when
such atoms are loaded in optical lattices, they can be used as quantum
simulators of unique many-body phenomena. In particular, we show that the
decoupling of the nuclear spin from the electronic angular momentum can be used
to implement many-body systems with an unprecedented degree of symmetry,
characterized by the SU(N) group with N as large as 10. Moreover, the interplay
of the nuclear spin with the electronic degree of freedom provided by a stable
optically excited state allows for the study of spin-orbital physics. Such
systems may provide valuable insights into strongly correlated physics of
transition metal oxides, heavy fermion materials, and spin liquid phases.
Experimental techniques for preparing and detecting the resulting phases are
discussed. | | Source: | arXiv, 0905.2610 | | Services: | Forum | Review | PDF | Favorites | |
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