Protecting the spin coherence of silicon vacancy color centers from thermal noise using diamond MEMS

Abstract

Spin coherence time, T2∗, of the silicon vacancy color center in diamond is limited by thermal phonons existing in the lattice. We show how this process can be engineered by applying static strain using a micro-electro-mechanical system (MEMS) fabricated on diamond. By suppressing the relevant thermal process, we demonstrate the improvement of spin T2∗.