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Quantum Rotation Sensing with Dual Sagnac Interferometers in an Atom-Optical Waveguide.

E R Moan1, R A Horne1, T Arpornthip1

  • 1Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA.

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|April 14, 2020
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Summary
This summary is machine-generated.

This study demonstrates a novel atomic Bose-Einstein condensate Sagnac interferometer for precise rotation sensing. The device achieves sensitivity comparable to Earth's rotation rate, showcasing its potential for advanced gyroscope applications.

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Area of Science:

  • Quantum sensing
  • Atomic physics
  • Interferometry

Background:

  • Sagnac interferometers are crucial for rotation sensing.
  • Atomic Bose-Einstein condensates (BECs) offer unique quantum properties for precision measurements.

Purpose of the Study:

  • To implement a Sagnac interferometer using a BEC for rotation sensing.
  • To demonstrate gyroscope operation with high sensitivity.

Main Methods:

  • Confining a BEC in a harmonic magnetic trap.
  • Splitting and recombining atom wave packets using Bragg lasers.
  • Steering atom packets along circular trajectories using the trapping potential.
  • Employing two conjugate interferometers for common-mode noise rejection.

Main Results:

  • Achieved interference visibilities of approximately 50%.
  • Demonstrated rotation sensitivity comparable to Earth's rate within 10 minutes of operation.
  • Successfully operated the device as a gyroscope by rotating the experimental setup.

Conclusions:

  • The BEC-based Sagnac interferometer is a viable platform for sensitive rotation sensing.
  • This approach offers a promising alternative for developing next-generation gyroscopes.
  • The common-mode rejection technique enhances signal isolation and measurement accuracy.