D'Urso, B. and van Handel, R. and Odom, B. and Hanneke, D. and Gabrielse, G. (2005) Single-Particle Self-Excited Oscillator. Physical Review Letters, 94 (11). Art. No. 113002. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:DURprl05
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Electronic feedback is used to self-excite the axial oscillation of a single electron in a Penning trap. Large, stable, easily detected oscillations arise even in an anharmonic potential. Amplitudes are controlled by adjusting the feedback gain, and frequencies can be made nearly independent of amplitude fluctuations. Quantum jump spectroscopy of a perpendicular cyclotron motion reveals the absolute temperature and amplitude of the self-excited oscillation. The possibility to quickly measure parts per billion frequency shifts could open the way to improved measurements of e-, e+, p, and [overline p] magnetic moments.
|Additional Information:||©2005 The American Physical Society (Received 10 August 2004; published 23 March 2005) We are grateful for wonderful electronics support from J. MacArthur and for lab assistance from A. Steinert and O. Elliott. This work was supported by the NSF. B.D. was also supported by the Fannie and John Hertz Foundation, and D. H. by the ARO.|
|Subject Keywords:||particle traps; oscillators; feedback; elementary particle magnetic moment; radiation pressure|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||03 Aug 2007|
|Last Modified:||26 Dec 2012 09:38|
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