Speaker
Description
Quantum sensors based on cold atoms have demonstrated unprecedented sensitivity, accuracy, and long-term stability that outcompetes “classical” sensors presently used for GPS-free positioning, navigation, and timing (PNT) systems. A crucial part of autonomous navigation is an accurate map of the local gravitational field. Portable absolute quantum gravimeters will enable higher-resolution gravity maps to be realized in airborne surveys, particularly in remote regions of Canada. We present the first results from a table-top quantum gravimeter using atom interferometry with laser-cooled rubidium atoms. This instrument employs optical Raman pulses to coherently split, reflect, and recombine atomic wavepackets in a Mach-Zehnder-like interferometer geometry. The phase shift of the resulting interference pattern provides a sensitive measurement of the gravitational acceleration experienced by the free-falling atoms. This instrument will serve as a high-accuracy gravity reference for future portable gravimeters.
| Keyword-1 | Quantum Sensing |
|---|---|
| Keyword-2 | Matter-Wave Interferometry |
| Keyword-3 | Laser Cooling and Trapping |
