Coherent Electric-Field Control of Orbital state in a Neutral Nitrogen-Vacancy Center

TL;DR

This paper demonstrates the coherent electric-field control of the orbital state in a neutral nitrogen-vacancy center in diamond, enabling low-power manipulation suitable for quantum technologies.

Contribution

It proposes NV$^0$ as an ideal system for orbital control via electric fields and demonstrates coherent control with significantly reduced power compared to spin control.

Findings

Electric susceptibility in NV$^0$ is comparable to NV$^-$ excited state.

Coherent orbital control achieved with three orders of magnitude less power.

Potential for interfacing with superconducting qubits in cryogenic environments.

Abstract

The coherent control of the orbital state is crucial for color centers in diamonds for realizing extremely low-power manipulation. Here, we propose the neutrally charged nitrogen-vacancy center, NV$^0$, as an ideal system for orbital control through electric fields. We estimate electric susceptibility in the ground state of NV$^0$ to be comparable to that in the excited state of NV$^-$. Also, we demonstrate coherent control of the orbital states of NV$^0$. The required power for orbital control is three orders of magnitude smaller than that for spin control, highlighting the potential for interfacing a superconducting qubit operated in a dilution refrigerator.