English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The Chern number, nu, as a topological invariant that identifies the windingof the ground state in the particle-hole space, is a definitive theoreticalsignature that determines whether a given superconducting system can supportMajorana zero modes. Here we show that such a winding can be faithfullyidentified for any superconducting system (p-wave or s-wave with spin-orbitcoupling) through a set of time-of-flight measurements, making it a diagnostictool also in actual cold atom experiments. As an application, we specialize themeasurement scheme for a chiral topological model of spinless fermions. Theproposed model only requires the experimentally accessible s-wave pairing andstaggered tunnelling that mimics spin-orbit coupling. By adiabaticallyconnecting this model to Kitaev's honeycomb lattice model, we show that itgives rise to nu = \pm 1 phases, where vortices bind Majorana fermions, andnu=\pm 2 phases that emerge as the unique collective state of such vortices.Hence, the preparation of these phases and the detection of their Chern numbersprovide an unambiguous signature for the presence of Majorana modes. Finally,we demonstrate that our detection procedure is resilient against mostinaccuracies in experimental control parameters as well as finite temperature.

Seeing Majorana fermions in time-of-flight images of spinless fermions coupled by s-wave pairing