Simultaneous vector magnetometry with nitrogen vacancy centers in diamond or other solid-state spin sensors

US10545200B2 · kind B2 · utility

Assignee

• President and Fellows of Harvard College · US

Inventors

• John F. Barry · Cambridge, US
• Jennifer May Schloss · Cambridge, US
• Matthew Turner · Troy, US
• Mikael P. Backlund · Palo Alto, US
• Ronald L. Walsworth · Cambridge, US

Key dates

• Filing date: May 31, 2017
• Grant date: Jan 28, 2020
• Expiry date: May 31, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/1215
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system and method for performing vector magnetometry are described. A method can include illuminating diamond with a modulated optical signal and a modulated microwave (MW) signal. A first, bias magnetic field is also applied to the diamond. Light emitted from the diamond in response to the optical signal, the MW signal, and the first magnetic field is detected via a single detector at a fixed position relative to the diamond. A modulation of the detected light encodes information corresponding to a plurality of nitrogen vacancy (NV) axes of the diamond.