Predicted signatures of p-wave superfluid phases and Majorana zero modes of fermionic atoms in RF absorption

TL;DR

This paper investigates the absorption spectra of p-wave superfluid phases in quasi-2D fermionic gases, revealing signatures of Majorana zero modes and providing a method to distinguish different superfluid phases.

Contribution

It introduces a way to identify superfluid phases and Majorana modes via RF absorption spectra in atomic Fermi gases with p-wave interactions.

Findings

Absorption spectra differ between superfluid phases.

Majorana zero modes produce distinct spectral signatures.

Spectra can distinguish between non-rotating and rotating superfluids.

Abstract

We study the superfluid phases of quasi-2D atomic Fermi gases interacting via a p-wave Feshbach resonance. We calculate the absorption spectra of these phases under a hyperfine transition, for both non-rotating and rotating superfluids. We show that one can identify the different phases of the p-wave superfluid from the absorption spectrum. The absorption spectrum shows clear signatures of the existence of Majorana zero modes at the cores of vortices of the weakly-pairing $p_x+ip_y$ phase.