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Large-Area Atom Interferometry with Frequency-Swept Raman Adiabatic Passage
Krish Kotru1,2, David L Butts2, Joseph M Kinast2
1Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Physical Review Letters
|September 19, 2015
Summary
We developed advanced atom optics for light-pulse atom interferometry, achieving large momentum transfers up to 30 photon recoils. This method improves acceleration sensitivity and measurement precision for laser-cooled atoms.
Area of Science:
- Atomic physics
- Quantum optics
- Interferometry
Background:
- Atom interferometry is a sensitive tool for precision measurements.
- Large momentum transfer is crucial for enhancing sensitivity.
Purpose of the Study:
- To demonstrate light-pulse atom interferometry using novel large-momentum-transfer atom optics.
- To improve acceleration sensitivity and reduce measurement uncertainty.
Main Methods:
- Utilizing stimulated Raman transitions and frequency-swept adiabatic rapid passage for atom optics.
- Implementing large-momentum-transfer techniques up to 30 photon recoil momenta.
- Employing laser-cooled atoms in an acceleration-sensitive interferometer.
Main Results:
- Achieved momentum splittings of up to 30 photon recoil momenta.
- Experimentally verified enhanced phase shift per unit acceleration.
- Characterized interferometer contrast loss and identified sources.
Conclusions:
- The developed atom optics enable enhanced acceleration sensitivity in atom interferometry.
- This method reduces measurement uncertainty by forgoing evaporative cooling and velocity selection.
- The technique facilitates large-area atom interferometry at higher data rates.
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