Majorana Modes in Driven-Dissipative Atomic Superfluids With Zero Chern Number

Details Majorana Modes in Driven-Dissipative Atomic Superfluids With Zero Chern Number Majorana Modes in Driven-Dissipative Atomic Superfluids With Zero Chern Number

2012-01-10

arxiv.org/abs/1201.2112v1

Physics

Condensed Matter

Quantum Gases

5 pages, 2 figures; with supplementary material (4 pages)

Scientific paper

We investigate dissipation-induced p-wave paired states of fermions in two dimensions and show that dissipation can break the bulk-edge correspondence present in Hamiltonian systems in a way that leads to the appearance of spatially separated Majorana zero modes in a phase with vanishing Chern number. We construct an explicit model of a dissipative vortex that traps a single of these modes and establish its topological origin by mapping it to a one-dimensional wire where we observe a non-equilibrium topological phase transition characterized by an abrupt change of a topological invariant (winding number). Engineered dissipation opens up possibilities for experimentally realizing such states with no Hamiltonian counterpart.

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