Progress towards measuring the standard quantum limit using a monolithic sapphire transducer

Author

Locke, C.R. ; Tobar, M.E. ; Ivanov, E.N.

Author_Institution

Dept. of Phys., Western Australia Univ., Nedlands, WA, Australia

fYear

2000

fDate

14-19 May 2000

Firstpage

194

Lastpage

195

Abstract

The operation of a novel monolithic sapphire transducer (MST) that has low mechanical and electrical losses is presented. The MST senses the motion of internal acoustic resonances through the interaction between electric and acoustic fields. Progress towards measuring the standard quantum limit by implementing a cryogenic MST is described.

Keywords

Q-factor; acoustic resonance; dielectric resonator oscillators; fluctuations; harmonic oscillators; indeterminancy; measurement theory; quantum noise; sapphire; thermal noise; Al/sub 2/O/sub 3/; cryogenic sapphire transducer; electric-acoustic field interaction; high Q factor; internal acoustic resonance sensing; microwave resonance; monolithic sapphire transducer; noise contributions; quantum fluctuations; standard quantum limit measurement; thermal Nyquist noise; whispering gallery modes; Acoustic measurements; Acoustic noise; Acoustic transducers; Measurement standards; Mechanical variables measurement; Noise measurement; Noise reduction; Oscillators; Phase noise; Q measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 2000 Conference on

Conference_Location

Sydney, NSW, Australia

Print_ISBN

0-7803-5744-2

Type

conf

DOI

10.1109/CPEM.2000.850942

Filename

850942