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Dual Open Atom Interferometry for Compact and Mobile Quantum Sensing.

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We developed a new atom interferometer protocol for dynamic platforms. This method precisely measures gravitational tides, achieving long-term stability for inertial measurements.

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Area of Science:

  • Atomic physics
  • Quantum sensing
  • Geophysics

Background:

  • Atom interferometry is a precise measurement technique.
  • Operating atom interferometers on dynamic platforms presents challenges.
  • Previous methods struggled with initial velocity dependence and long-term stability.

Purpose of the Study:

  • To demonstrate an atom interferometer protocol suitable for dynamic platforms.
  • To achieve precise inertial quantity measurements with long-term stability.
  • To overcome initial velocity dependence in atom interferometry.

Main Methods:

  • Utilized two open interferometers from a single atomic source.
  • Employed different interrogation times to cancel initial velocity effects.
  • Validated the protocol by measuring gravitational tides.

Main Results:

  • Achieved a precision of 4.5 μGal in 2000 runs (6.7 hours).
  • Demonstrated long-term phase stability in open atom interferometry.
  • Successfully measured inertial quantities on a dynamic platform.

Conclusions:

  • The developed protocol is compatible with dynamic platforms.
  • This work represents the first demonstration of inertial quantity measurement with stable open atom interferometry.
  • The method offers high precision and accuracy for geophysical measurements.