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Fabrication and Characterization of Superconducting Resonators

Fabrication and Characterization of Superconducting Resonators

Published on: May 21, 2016

Quartz resonator instabilities under cryogenic conditions.

Maxim Goryachev¹, Serge Galliou, Philippe Abbe

¹Time and Frequency Department of the Franche-Comté Electronique, Mécanique, Thermique et Optique–Sciences et Technologies (FEMTO-ST) Institute, Besancon, France. maxim.goryachev@femto-st.fr

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

|February 2, 2012

Summary

Quartz crystal resonators show low phase noise at liquid helium temperatures. This study identifies noise sources and evaluates frequency stability for cryocooled devices.

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Area of Science:

Physics
Materials Science
Electrical Engineering

Background:

Quartz crystal resonators are crucial for frequency standards.
Operating resonators at cryogenic temperatures can enhance performance.
Understanding noise mechanisms is vital for high-stability frequency sources.

Purpose of the Study:

To investigate the phase noise of quartz crystal resonators at liquid helium temperatures.
To identify the sources of phase flicker and white noise in this cryogenic environment.
To evaluate the stability limits of frequency sources utilizing these resonators.

Main Methods:

Detailed explanation of measurement methods and the experimental setup.
Phase noise measurements across various resonance modes and excitation levels.
Analysis of noise dependence on operating time, device orientation, and temperature.

Main Results:

Phase noise characteristics were measured under different experimental conditions.
Sources of phase flicker and white noise were identified.
Stability limits were evaluated based on the observed phase noise.

Conclusions:

Cryogenic operation of quartz crystal resonators offers potential for low phase noise.
Device orientation and environmental factors significantly influence noise performance.
The findings provide insights for designing stable cryogenic frequency sources.