Article ID Journal Published Year Pages File Type
1855262 Annals of Physics 2009 23 Pages PDF
Abstract

We propose to use a two-species Fermi gas with the interspecies s-wave Feshbach resonance to realize p  -wave superfluidity in two dimensions. By confining one species of fermions in a two-dimensional plane immersed in the background three-dimensional Fermi sea of the other species, an attractive interaction is induced between two-dimensional fermions. We compute the pairing gap in the weak-coupling regime and show that it has the symmetry of px+ipypx+ipy. Because the magnitude of the pairing gap increases toward the unitarity limit, it is possible that the critical temperature for the px+ipypx+ipy-wave superfluidity becomes within experimental reach. The resulting system has a potential application to topological quantum computation using vortices with non-Abelian statistics. We also discuss aspects of our system in the unitarity limit as a “nonrelativistic defect conformal field theory (CFT)”. The reduced Schrödinger algebra, operator-state correspondence, scaling dimensions of composite operators, and operator product expansions are investigated.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Physics and Astronomy (General)
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