Majorana Fermions in Equilibrium and Driven Cold Atom Quantum Wires

Details Majorana Fermions in Equilibrium and Driven Cold Atom Quantum Wires Majorana Fermions in Equilibrium and Driven Cold Atom Quantum Wires

2011-02-25

arxiv.org/abs/1102.5367v2

Phys.Rev.Lett.106:220402,2011

Physics

Condensed Matter

Quantum Gases

4 pages, 3 figures; references added

Scientific paper

10.1103/PhysRevLett.106.220402

We introduce a new approach to create and detect Majorana fermions using optically trapped 1D fermionic atoms. In our proposed setup, two internal states of the atoms couple via an optical Raman transition---simultaneously inducing an effective spin-orbit interaction and magnetic field---while a background molecular BEC cloud generates s-wave pairing for the atoms. The resulting cold atom quantum wire supports Majorana fermions at phase boundaries between topologically trivial and nontrivial regions, as well as `Floquet Majorana fermions' when the system is periodically driven. We analyze experimental parameters, detection schemes, and various imperfections.

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