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We developed a DC voltage reference using cesium Rydberg atoms and Stark shifts. This method offers a sensitive way to measure voltage, with potential for higher ranges.

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Area of Science:

  • Atomic Physics
  • Quantum Measurement
  • Electrical Metrology

Background:

  • Accurate DC voltage references are crucial for metrology and scientific research.
  • Atomic phenomena offer stable and precise physical bases for measurement standards.
  • Rydberg atoms, with their large electric dipole moments, are sensitive to electric fields.

Purpose of the Study:

  • To implement a novel DC voltage reference.
  • To utilize Stark shifts in cesium Rydberg atoms for voltage measurement.
  • To assess the sensitivity and potential of this atomic-based voltage reference.

Main Methods:

  • Excitation of cesium atoms to the 15s Rydberg state via a two-photon transition.
  • Measurement of the scalar, quadratic Stark shift induced by the target voltage.
  • Integration of a parallel plate capacitor within a cesium vapor cell for voltage application.

Main Results:

  • Demonstrated a DC voltage reference based on Stark shifts of cesium Rydberg atoms.
  • Achieved a sensitivity of 82 mV/sqrt(Hz) at a 100 V bias.
  • Identified pathways for adapting the device for higher voltage ranges.

Conclusions:

  • Cesium Rydberg atoms provide a viable platform for DC voltage metrology.
  • The Stark shift measurement technique offers high sensitivity.
  • Further optimization can extend the voltage measurement capabilities.