px+ipy Superfluid from s -Wave Interactions of Fermionic Cold Atoms
Chuanwei Zhang, Sumanta Tewari, Roman M. Lutchyn +1 more
Two-dimensional (p(x)+ip(y)) superfluids or superconductors offer a playground for studying intriguing physics such as quantum teleportation, non-Abelian statistics, and topological quantum computation. Creating such a superfluid in cold fermionic atom optical traps using p-wave Feshbach resonance is turning out to be challenging. Here we propose a method to create a p(x)+ip(y) superfluid directly from an s-wave interaction making use of a topological Berry phase, which can be artificially generated. We discuss ways to detect the spontaneous Hall mass current, which acts as a diagnostic for the chiral p-wave superfluid.
arXiv:0805.4203•Physical Review Letters•Oct 17, 2008•397 citations