US 12,270,653 B2
Quantum weak-value birefringent Coriolis vibratory gyroscope
Garrett K. Josemans, Fredericksburg, VA (US); and Benjamin A. Baldwin, King George, VA (US)
Assigned to United States of America, as represented by the Secretary of the Navy, Arlington, VA (US)
Filed by Garrett K. Josemans, Fredericksburg, VA (US); and Benjamin A. Baldwin, King George, VA (US)
Filed on Apr. 14, 2022, as Appl. No. 17/721,094.
Prior Publication US 2024/0044648 A1, Feb. 8, 2024
Int. Cl. G01C 19/66 (2006.01); G01C 19/5614 (2012.01); G01C 19/5649 (2012.01)
CPC G01C 19/661 (2013.01) [G01C 19/5614 (2013.01); G01C 19/5649 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A device for measurement of rotation rate, said device comprising:
a vertical-cavity surface-emitting laser for emitting an optical beam of photons along a drive axis orthogonal to rotation and sense axes;
a first polarizer for pre-selection of said optical beam into equal superposition of pre-selection polarization states in horizontal and vertical planes;
a birefringent crystal composed of uniaxial mineral crystal silicon dioxide for weakly interacting with and splitting said optical beam of photons into a mutually in-phase pair of parallel beams of photons that emerges from said birefringent crystal along said drive axis and separated along said sense axis, said optical beam intersecting said birefringent crystal at an incidence angle;
a second polarizer for post-selection of said pair of parallel beams into post-selection polarization states nearly orthogonal to said pre-selection polarization states;
a detector for registering said parallel beams of photons; and
a platform onto which said laser, said first polarizer, said crystal, said second polarizer and said detector are sequentially disposed parallel to said vertical plane, wherein
said parallel beams are distinguished by horizontal and vertical polarizations relative to said birefringent crystal, and separate by phase difference in response to the rotation rate about said rotation axis, and
said birefringent crystal weakly interacts with said optical beam to amplify said phase difference.