Majorana modes and p-wave superfluids for fermionic atoms in optical lattices

Bühler, Adam and Lang, Nicolai and Kraus, Christina V and Möller, Gunnar and Huber, Sebastian D and Büchler, Hans-Peter (2014) Majorana modes and p-wave superfluids for fermionic atoms in optical lattices. Nature communications, 5 . p. 4504. ISSN 2041-1723. (doi:https://doi.org/10.1038/ncomms5504) (Full text available)

PDF (submitted article) - Pre-print
Download (567kB) Preview
[img]
Preview
Official URL
http://dx.doi.org/10.1038/ncomms5504

Abstract

The quest for realizations of non-Abelian phases of matter, driven by their possible use in fault-tolerant topological quantum computing, has been spearheaded by recent developments in p-wave superconductors. The chiral p_x + i p_y-wave superconductor in two-dimensions exhibiting Majorana modes provides the simplest phase supporting non-Abelian quasiparticles and can be seen as the blueprint of fractional topological order. Alternatively, Kitaev's Majorana wire has emerged as an ideal toy model to understand Majorana modes. Here, we present a way to make the transition from Kitaev's Majorana wires to two-dimensional p-wave superconductors in a system with cold atomic gases in an optical lattice. The main idea is based on an approach to generate p-wave interactions by coupling orbital degrees of freedom with strong s-wave interactions. We demonstrate how this design can induce Majorana modes at edge dislocations in the optical lattice and we provide an experimentally feasible protocol for the observation of the non-Abelian statistics.

Item Type: Article
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Gunnar Moller
Date Deposited: 18 Aug 2016 21:40 UTC
Last Modified: 19 Aug 2016 10:10 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/55585 (The current URI for this page, for reference purposes)
Möller, Gunnar: https://orcid.org/0000-0001-8986-0899
  • Depositors only (login required):

Downloads

Downloads per month over past year