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Continuous Cold-Atom Inertial Sensor with 1  nrad/sec Rotation Stability.

I Dutta1, D Savoie1, B Fang1

  • 1LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, 61 avenue de l'Observatoire, 75014 Paris, France.

Physical Review Letters
|May 21, 2016
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Summary
This summary is machine-generated.

This study introduces a continuously operating cold-atom inertial sensor, enhancing atom interferometer (AI) sensitivity. This advancement achieves state-of-the-art rotation sensitivity and stability for atomic gyroscopes.

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Area of Science:

  • Atomic, Molecular, and Optical Physics
  • Quantum Sensing
  • Inertial Navigation

Background:

  • Atom interferometers (AIs) are sensitive inertial sensors but suffer from dead times.
  • Continuous operation is crucial for maximizing AI sensitivity and performance.

Purpose of the Study:

  • To report the operation of a cold-atom inertial sensor with continuous rotation signal capture.
  • To demonstrate improved short-term sensitivity and state-of-the-art stability in atomic gyroscopes.

Main Methods:

  • Utilized a joint interrogation scheme, simultaneously preparing a cold-atom source and operating an AI.
  • Implemented a cold-atom gyroscope with an 11 cm² Sagnac area.

Main Results:

  • Achieved a rotation sensitivity of 100 nrad/sec/√Hz.
  • Demonstrated a rotation stability of 1 nrad/sec at 10⁴ sec integration time.
  • Eliminated dead times through continuous operation, improving short-term sensitivity.

Conclusions:

  • Continuous operation of cold-atom inertial sensors significantly enhances AI performance.
  • This technology paves the way for large-area AIs operating at their quantum noise limit.
  • Represents a significant advancement in atomic gyroscope technology.