Gyroscopes based on nitrogen-vacancy centers in diamond

US9689679B2 · kind B2 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Dmitry Budker · Corona, US
• Micah Ledbetter · Sunnyvale, US
• Kasper Jensen · Berkeley, US
• Andrey Jarmola · Berkeley, US

Key dates

• Filing date: Oct 2, 2014
• Grant date: Jun 27, 2017
• Expiry date: Dec 31, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/46
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A solid-state gyroscope apparatus based on ensembles of negatively charged nitrogen-vacancy (NV−) centers in diamond and methods of detection are provided. In one method, rotation of the NV− symmetry axis will induce Berry phase shifts in the NV− electronic ground-state coherences proportional to the solid angle subtended by the symmetry axis. A second method uses a modified Ramsey scheme where Berry phase shifts in the 14N hyperfine sublevels are employed.