Phased Geometric Controls of V-Shaped Three-Level System for Zero-field Quantum Sensing

TL;DR

This paper introduces a phased geometric control protocol for zero-field quantum sensing in a V-shaped three-level system, enabling precise, low-power double quantum gates using geometric properties and linearly polarized microwaves.

Contribution

It presents a novel phased geometric control method for zero-field double quantum gates in V-shaped three-level systems, enhancing precision and power efficiency.

Findings

Successful implementation of low-power zero-field sensing with NV centers

Realization of precise double quantum gate operations

Enhanced control over zero-field spin-based quantum technology

Abstract

Here we propose and demonstrate a phased geometric control protocol for zero-field double quantum gates in a V-shaped three-level spin system. This method utilizes linearly polarized microwave pulses and exploits the geometric qubit properties to prevent state leakage. By employing specific phased geometric controls, we realize a low-power multi-pulse zero-field sensing technique using single nitrogen-vacancy centers in diamond. Our method offers a novel approach to implement precise double quantum gate operations with an adaptable driving power, making it a valuable tool for zero-field spin-based quantum technology.