Jul 17 – 22, 2022
Royal Conservatory of Music, Toronto
America/Toronto timezone

Sagnac atom interferometer gyroscope with large enclosed area and multiple orbits

Jul 21, 2022, 5:00 PM
1h 30m
Hart House (Hart House)

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Quantum optics and hybrid quantum systems Poster session


Sagnac atom interferometers are a promising technique for high-performance rotation sensing, with potential applications for inertial navigation. The use of trapped atoms for the interferometer avoids the need for long free-fall distances that would be incompatible with a navigation apparatus. We have previously demonstrated a dual Sagnac interferometer using Bose-condensed atoms in a time-orbiting potential trap. We report here on improvements to this approach, including a 3-fold increase in the orbit radius and the use of multiple orbits. These improvements lead to an enclosed area of 8.2 mm$^2$, which corresponds to a rotation sensitivity of $6×10^-7$ rad/s at shot-noise-limited detection. While shot-noise-limited performance has not yet be achieved, the interferometer operation is sufficiently stable to permit useful averaging times longer than $10^4$ s. We also discuss a new, more compact, version of the apparatus that is based on an atom chip and which will be suitable for environmental testing.

Presenter name Marybeth Beydler
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Primary authors

Prof. Cass Sackett (University of Virginia) Dr Edward Moan (University of Virginia) Marybeth Beydler (University of Virginia)

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