Gyroscopes based on nitrogen-vacancy centers in diamond
First Claim
Patent Images
1. A method of inertial sensing, comprising:
- (a) providing a diamond sensor with a plurality of nitrogen-vacancy centers;
(b) exposing the diamond sensor to a magnetic field along nitrogen-vacancy center axes;
(c) rotating the diamond sensor to generate geometric phase shifts in the nitrogen-vacancy centers;
(d) detecting the geometric phase shifts; and
(e) reading information from the geometric phase shifts.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
21 Claims
-
1. A method of inertial sensing, comprising:
-
(a) providing a diamond sensor with a plurality of nitrogen-vacancy centers; (b) exposing the diamond sensor to a magnetic field along nitrogen-vacancy center axes; (c) rotating the diamond sensor to generate geometric phase shifts in the nitrogen-vacancy centers; (d) detecting the geometric phase shifts; and (e) reading information from the geometric phase shifts. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method of inertial sensing, comprising:
-
(a) providing a diamond sensor with a plurality of nitrogen-vacancy centers; (b) exposing the diamond sensor to a magnetic field; (c) illuminating the diamond sensor in the magnetic field with a 532-nm light; (d) applying a first radio frequency pulse at a hyperfine transition frequency initiating the sensor to a state sensitive to rotations; (e) rotating the diamond sensor to generate geometric phase shifts; (f) applying a second radio frequency pulse at a hyperfine transition frequency to convert the sensor to a state that can be optically probed; and (g) reading nuclear spin states. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A solid state gyroscope apparatus, comprising:
-
a diamond with a plurality of nitrogen-vacancy centers on a spindle; a 532-nm light source configured to expose the diamond to light; a magnetic field source configured to expose the diamond to a magnetic field; a microwave radiation source configured to expose the diamond to microwave radiation; and a detector. - View Dependent Claims (17, 18, 19, 20, 21)
-
Specification