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Low Temperature Properties of Low-Loss Macroscopic Lithium Niobate Bulk Acoustic Wave Resonators
William M. Campbell, Leonardo Mariana, Sonali Parashar +2
We investigate gram scale macroscopic bulk acoustic wave (BAW) resonators manufactured from plates of piezoelectric lithium niobate. The intrinsic competing loss mechanisms were st…
Microwave Cavity Mode Optimisation by Background Anti-Resonance Tuning
Michael T. Hatzon, Eugene N. Ivanov, Jeremy F. Bourhill +2
To derive the best oscillator phase noise when implementing a high-Q resonator, the spectral line-shape must have high contrast and symmetry. Ideally, this line-shape is Lorentzian…
Conductivity Freeze-Out in Isotopically Pure Si-28 at milli-Kelvin Temperatures
Ben T. McAllister, Zijun C. Zhao, Jeremy F. Bourhill +4
Silicon is a key semiconducting material for electrical devices and hybrid quantum systems where low temperatures and zero-spin isotopic purity can enhance quantum coherence. Elect…