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APS » Journals » Phys. Rev. B » Volume 43 » Issue 16
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Phys. Rev. B 43, 13699–13702 (1991)

Effect of random noise on a mode-locked system

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M. F. Crommie, K. Craig, and M. S. Sherwin
Department of Physics and Center for Nonlinear Science, University of California, Santa Barbara, California, 93106

A. Zettl
Department of Physics, University of California, Berkeley, California, 94720
Materials and Chemical Sciences, Division of the Lawrence Berkeley Laboratory, Berkeley, California 94720

Received 25 February 1991; published in the issue dated 1 June 1991

We have experimentally added white noise to an analog Josephson-junction simulator in the mode-locked state. The Poincaré sections and power spectra of the analog simulator have been reconstructed from the resultant time-series data. A classical form of noise squeezing is observed. In addition, the power spectra associated with noisy motion about the subharmonic fixed points in the simulator’s Poincaré section are found to be Lorentzian in shape. These observations are well accounted for by a theory of noisy mode-locked dynamics recently developed by Wiesenfeld and Satija.

© 1991 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.43.13699
DOI:
10.1103/PhysRevB.43.13699
PACS:
05.40.+j, 05.45.+b
 
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