Nonlocality and dynamic response of Majorana states in fermionic superfluids

Abstract

We suggest a microscopic model describing the nonlocal ac response of a pair of Majorana states in fermionic superfluids beyond the tunneling approximation. The time-dependent perturbations of quasiparticle transport are shown to excite finite period beating of the wavefunction between the distant Majorana states. We propose an experimental test to measure the characteristic time scales of quasiparticle transport through the pair of Majorana states defining, thus, quantitative characteristics of nonlocality known to be a generic feature of Majorana particles.

Keywords

• Majorana fermions
• superconductivity
• nonequilibrium dynamics
• 74.78.Na
• 73.40.-c
• 72.90.+y