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Transverse Confinement of Photon Position in the Light-Atom Interaction
Jun Sun1,2, Yong-Nan Sun3
1Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, Zhejiang, China.
Physical Review Letters
|June 11, 2021
Summary
Atom wave functions can confine photons, altering recoil momentum in atom interferometry. This effect impacts high-precision measurements by introducing systematic shifts dependent on atomic and beam spatial distributions.
Area of Science:
- Atomic physics
- Quantum optics
- Interferometry
Background:
- Atom interferometry relies on phase shifts influenced by photon wave vectors and recoil momentum.
- Understanding light-atom interactions is crucial for precision measurements.
Purpose of the Study:
- To hypothesize and model how atom wave functions affect photon confinement and recoil momentum.
- To analyze the effective wave vector shift in light-atom interactions.
Main Methods:
- Developed a model for photon effective wave vector in monochromatic optical fields.
- Calculated the relative shift of the effective wave vector to the original wave vector.
- Considered a 3D Gaussian atom wave function and a Gaussian photon beam.
Main Results:
- The atom's wave function can provide transverse confinement to photons.
- This confinement leads to a shift in the effective photon wave vector.
- The shift in effective wave vector affects the mean recoil momentum.
Conclusions:
- The spatial distribution of atoms and the transverse beam profile can cause systematic effects in atom interferometry.
- This finding is relevant for improving the precision of atom interferometry experiments.
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