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Cryogenic microwave engineering for the dispersive readout of spin-qubits
Denney, Connor F.
Denney, Connor F.
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2024
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Spin qubits offer a quantum computing platform that is compatible with state-of-the-art CMOS fabrication techniques and facilities. However, advancements in the understanding of materials and methods for defect-qubits, gate-defined spin qubits, and other paramagnetic samples will be required to realize this potent technology. In this work, the infrastructure for microwave characterization of quantum materials is developed and tested. Methods and equipment for high sensitivity microwave metrology are presented to allow for low-temperature characterization of promising silicon spin qubit samples. Microwave-compatible sample holders and test fixtures were designed, simulated and tested. Finally, in an effort to enable the realization of a magnetic-insensitive parametric amplifier, a theoretical analysis of SrTiO3 cryogenic varactors is presented.
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