Abstract
During the 1990’s high-Q acoustic resonators coupled to high-Q electromagnetic resonator (or parametric) transducers were under development at the University of Western Australia for a variety of ultra-precise measurements. These systems relied on very low-noise pump oscillators and readout systems at microwave frequencies and produced the lowest noise resonant-bar gravitational wave detector of the decade. A research program to measure the Standard Quantum Limit (SQL) of displacement of an acoustic oscillator and perform Quantum Non-Demolition (QND) was initiated. Promising results were obtained using re-entrant cavities and Whispering Gallery modes in high-Q sapphire resonators. In the case of the sapphire transducer, operation in the resolved sideband cooling regime was achieved, which is a necessary requirement for QND measurement. In this presentation the major achievements of our parametric transducer work is summarized along with what is necessary to measure the SQL and perform a QND experiment using our technology.
© 2009 APS DLS
PDF ArticleMore Like This
A. Schliesser, O. Arcizet, R. Rivière, and T.J. Kippenberg
EB1_3 European Quantum Electronics Conference (EQEC) 2009
A. Schliesser, R. Rivière, O. Arcizet, and T. J. Kippenberg
IFD1 International Quantum Electronics Conference (IQEC) 2009
Junxin Chen, David Mason, Massimiliano Rossi, Yeghishe Tsaturyan, and Albert Schliesser
S3C.5 Quantum Information and Measurement (QIM) 2019