Stable Topological Superfluid Phase of Ultracold Polar Fermionic Molecules

Abstract

We show that single-component fermionic polar molecules confined to a 2D geometry and dressed by a microwave field, may acquire an attractive $1/r^3$ dipole-dipole interaction leading to superfluid p-wave pairing at sufficiently low temperatures even in the BCS regime. The emerging state is the topological $p_x+i{p}_y$ 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 $\sim 10^8$ cm${}^{-2}$.

References in corpus (8)

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• Resonantly-paired fermionic superfluids
• Quantum phases of a Two-Dimensional Dipolar Fermi Gas
• Repulsive shield between polar molecules
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• Strongly-resonant p-wave superfluids
• Induced p-wave superfluidity in two dimensions: Brane world in cold atoms and nonrelativistic defect CFTs