5 papers
Beyond linear coupling in microwave optomechanics
D. Cattiaux, X. Zhou, S. Kumar +8
We explore the nonlinear dynamics of a cavity optomechanical system. Our realization consisting of a drumhead nano-electro-mechanical resonator (NEMS) coupled to a microwave cavity…
Design Evaluation of Serial and Parallel sub-mK Continuous Nuclear Demagnetization Refrigerators
D. Schmoranzer, J. Butterworth, S. Triqueneaux +2
We present the evaluation of two different design configurations of a two-stage PrNi continuous nuclear demagnetization refrigerator. Serial and parallel configurations of the…
A 10 mK hermetic cell for eliminating parasitic heating in cryogen-free dilution refrigerators
David Schmoranzer, Sumit Kumar, Sébastien Triqueneaux +5
Cryogen-free dilution refrigerators generally simplify low temperature research but some types of samples, including superconducting qubits and other nanoelectronic devices, are af…
Geometrical Nonlinearity of Circular Plates and Membranes: an Alternative Method
D. Cattiaux, S. Kumar, X. Zhou +2
We apply the well-established theoretical method developed for geometrical nonlinearities of micro/nano-mechanical clamped beams to circular drums. The calculation is performed und…
Cryogenic broadband vibration measurement on a cryogen-free dilution refrigerator
D. Schmoranzer, A. Luck, E. Collin +1
This manuscript reports a set of acceleration measurements in the frequency range from 0 to 50 kHz performed at the mixing chamber plate (2 axes) and the top flange (3 axes) of a c…