Article,
Stable Topological Superfluid Phase of Ultracold Polar Fermionic Molecules
Physical Review Letters, 103 (15): 155302+ (Oct 10, 2009)
DOI: 10.1103/physrevlett.103.155302
Abstract
We show that single-component fermionic polar molecules confined to a 2D geometry and dressed by a microwave field may acquire an attractive 1/r3 dipole-dipole interaction leading to superfluid p-wave pairing at sufficiently low temperatures even in the BCS regime. The emerging state is the topological px+ipy phase promising for topologically protected quantum information processing. The main decay channel is via collisional transitions to dressed states with lower energies and is rather slow, setting a lifetime of the order of seconds at 2D densities ∼108 cm-2.
