US 11,971,256 B1
Guided cold atom inertial sensors with membrane integrated photonics on atom trap integrated platforms
Jongmin Lee, Albuquerque, NM (US); Grant Biedermann, Norman, OK (US); Yuan-Yu Jau, Albuquerque, NM (US); Michael Gehl, Edgewood, NM (US); and Christopher Todd DeRose, Albuquerque, NM (US)
Assigned to National Technology & Engineering Solutions of Sandia, LLC, Albuquerque, NM (US)
Filed by National Technology & Engineering Solutions of Sandia, LLC, Albuquerque, NM (US)
Filed on Jan. 6, 2022, as Appl. No. 17/569,578.
Claims priority of provisional application 63/144,016, filed on Feb. 1, 2021.
Int. Cl. G01C 19/58 (2006.01); G01P 15/08 (2006.01); G01P 15/093 (2006.01)
CPC G01C 19/58 (2013.01) [G01P 15/0802 (2013.01); G01P 15/093 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An inertial sensor system, comprising:
a waveguide;
a magnetic field system adapted to establish a magnetic field gradient about the waveguide; and
a laser system adapted to emit:
a plurality of cooling beams such that the cooling beams intersect within a region in which the magnetic field gradient is formed, thereby forming a magneto-optical trap (MOT);
a red-detuned trapping beam such that red-detuned light propagates in the waveguide, the red-detuned trapping beam being red-detuned with respect to a resonant optical transition of an atom trapped in the MOT;
a blue-detuned trapping beam such that blue-detuned light propagates in the waveguide, the blue-detuned trapping beam being blue-detuned with respect to the resonant optical transition of the atom trapped in the MOT, wherein propagation of the red-detuned light and the blue-detuned light causes formation of an evanescent field optical dipole trap (EF-ODT) about the waveguide; and
a sequence of Raman pulses or a sequence of Bragg pulses, such that the sequence of Raman/Bragg pulses propagates through the waveguide wherein the sequence of Raman/Bragg pulses is adapted to impart momentum kicks to guided atoms in the EF-ODT, wherein motion of the inertial sensor system can be determined based upon motion of the guided atoms in the EF-ODT.