Ultrasensitive Detection of Majorana Fermions via Spin-based Optomechanics with Carbon Nanotubes

TL;DR

This paper introduces an optical detection method for Majorana fermions using spin-based optomechanics with carbon nanotubes, enabling precise measurement of Majorana properties for quantum computing applications.

Contribution

It presents a novel all-optical scheme to detect Majorana fermions via spin-mechanical coupling in carbon nanotubes, advancing quantum detection techniques.

Findings

Majorana fermion coupling strength measurable from probe spectrum

Decay rate of Majorana fermions can be inferred from optical signals

Scheme facilitates applications in quantum computation and information processing

Abstract

We propose a novel optical method to detect the existence of Majorana fermions at the ends of the semiconductor nanowire via the coupling to an electron spin trapped on a carbon nanotube resonator under the control of a strong pump field and a weak probe field. The coupling strength of Majorana fermion to the spin in the carbon nanotube and the decay rate of the Majorana fermion can be easily measured from the probe absorption spectrum via manipulating the spin-mechanical coupling in the suspended\ carbon nanotube. The scheme proposed here will open a good perspective for its applications in all-optical controlled Majorana fermion-based quantum computation and quantum information processing.