Stable Three-axis Nuclear Spin Gyroscope in Diamond

Applications

This invention is used in navigation, inertial sensing, rotation sensors, mobile and geodetic applications.

Problem Addressed

The most widely used commercial gyroscopes are built using micro-electromechanical systems (MEMS) technology. Despite its several advantages over other systems, they suffer sensitivity drifts after a few minutes of operation. Therefore, there is a need for a commercial gyroscope that offers the advantages of MEMS-based systems with little or no sensitivity drift.

Technology

The invention overcomes the drawbacks of current gyroscopes by introducing a quantum sensor that provides a sensitive and stable three-axis gyroscope in the solid state. The Nitrogen-Vacancy (NV) based gyroscope includes a diamond structure implanted with multiple NV centers, whose nuclear spins form a spin gyroscope. A number of radio-frequency coils and microwave coplanar waveguides are fabricated on the diamond structure to provide a sensitive and stable three-axis gyroscope in the solid state.

Advantages

  • Better stability and higher sensitivity than conventional MEMS-based gyroscopes