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Tailoring Multiloop Atom Interferometers with Adjustable Momentum Transfer.

L A Sidorenkov1, R Gautier1, M Altorio1

  • 1LNE-SYRTE, Observatoire de Paris-Université PSL, CNRS, Sorbonne Université, 61 avenue de l'Observatoire, 75014 Paris, France.

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This summary is machine-generated.

We developed adjustable momentum transfer to prevent spurious paths in multiloop atom interferometers, improving quantum sensing accuracy for rotation rates. This method enhances cold-atom gyroscopes by suppressing acceleration sensitivity.

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Area of Science:

  • Quantum sensing
  • Atomic interferometry
  • Quantum optics

Background:

  • Multiloop matter-wave interferometers are crucial for measuring physical quantity derivatives.
  • Mirror imperfections in these interferometers generate spurious paths, corrupting measurement signals.
  • Existing methods struggle to mitigate signal scrambling caused by these spurious paths.

Purpose of the Study:

  • To demonstrate a method of adjustable momentum transfer to prevent spurious path recombination in double-loop atom interferometers.
  • To experimentally investigate the recombination conditions of spurious matter waves.
  • To develop a more robust cold-atom gyroscope for measuring rotation rates.

Main Methods:

  • Implementing adjustable momentum transfer in a double-loop atom interferometer.
  • Experimentally studying matter-wave recombination conditions.
  • Developing a model to account for atomic source coherence properties.
  • Utilizing a cold-atom gyroscope setup.

Main Results:

  • Adjustable momentum transfer effectively prevents spurious path recombination.
  • Experimental recombination conditions are quantitatively supported by a coherence model.
  • A single-shot acceleration sensitivity was suppressed by at least a factor of 50 in the developed gyroscope.

Conclusions:

  • The demonstrated method significantly improves the fidelity of multiloop atom interferometers.
  • This technique offers a viable solution for building high-precision cold-atom gyroscopes.
  • The findings will influence the design of future multiloop atom interferometers for inertial sensing.