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arXiv · 0908.4568

Creating p-wave superfluids and topological excitations in optical lattices

P. Massignan·A. Sanpera·M. Lewenstein
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Abstract

We propose to realize a p-wave superfluid using bosons mixed with a single species of fermions in a deep optical lattice. We analyze with a self-consistent method its excitation spectrum in presence of a vortex, and we point out the range of interaction strengths in which the zero-energy mode with topological character exists on a finite optical lattice. Lattice effects are strongest close to fermionic half-filling: here the linearity of the low-lying spectrum is lost, and a new class of extended zero-energy modes with checkerboard structure and d-wave symmetry appears.

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P. Massignan, A. Sanpera, M. Lewenstein. 2010-03-24. Creating p-wave superfluids and topological excitations in optical lattices. https://doi.org/10.1103/physreva.81.031607

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