Fast optical cooling of nanomechanical cantilever with the dynamical Zeeman effect

TL;DR

This paper introduces a novel optical EIT cooling method for nanomechanical cantilevers using the dynamical Zeeman effect, achieving rapid cooling to near ground state.

Contribution

It presents a new cooling scheme combining Zeeman effect and quantum interference, enhancing cooling efficiency over traditional methods.

Findings

Achieves near-ground-state cooling of cantilever

Enhances cooling transition via Zeeman effect

Reduces to traditional EIT cooling under certain conditions

Abstract

We propose an efficient optical electromagnetically induced transparency (EIT) cooling scheme for a cantilever with a nitrogen-vacancy center attached in a non-uniform magnetic field using dynamical Zeeman effect. In our scheme, the Zeeman effect combined with the quantum interference effect enhances the desired cooling transition and suppresses the undesired heating transitions. As a result, the cantilever can be cooled down to nearly the vibrational ground state under realistic experimental conditions within a short time. This efficient optical EIT cooling scheme can be reduced to the typical EIT cooling scheme under special conditions.