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Fabrication and Characterization of Superconducting Resonators
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Two-port microwave calibration at millikelvin temperatures
Leonardo Ranzani1, Lafe Spietz, Zoya Popovic
1National Institute of Standards and Technology, Boulder, Colorado 80305, USA. leonardo.ranzani@colorado.edu
The Review of Scientific Instruments
|April 6, 2013
Summary
We developed a microwave calibration system for millikelvin temperatures, crucial for superconducting quantum information experiments. This system accurately characterizes microwave components at ultra-low temperatures.
Area of Science:
- Physics
- Quantum Computing
- Cryogenics
Background:
- Accurate characterization of microwave components is essential for sensitive quantum experiments.
- Operating at millikelvin temperatures presents unique challenges for measurement systems.
Purpose of the Study:
- To introduce a novel 2-port microwave calibration system for millikelvin temperatures.
- To enable precise characterization of microwave components within dilution refrigerators.
Main Methods:
- Implementation of an adapted thru-reflect-line algorithm.
- Operation at the coldest stage of a dilution refrigerator.
Main Results:
- Achieved better than 0.1 dB accuracy in component characterization.
- Demonstrated effectiveness at temperatures relevant to superconducting quantum information.
Conclusions:
- The developed system is an effective tool for microwave calibration at millikelvin temperatures.
- Enables high-accuracy measurements critical for advancing quantum technologies.
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