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Related Experiment Videos

Spontaneous synchronization in a Josephson transmission line.

D Tsygankov1, K Wiesenfeld

  • 1School of Physics, Georgia Institute of Technology, Atlanta 30332, USA.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|October 9, 2002
PubMed
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High-frequency Josephson arrays exhibit distinct dynamics, showing synchronized states even without external loads. This study investigates the nature and stability of these synchronized states in current-biased series arrays.

Area of Science:

  • Physics
  • Condensed Matter Physics
  • Nonlinear Dynamics

Background:

  • Josephson arrays display complex dynamics dependent on operating frequency.
  • High-frequency behavior in these arrays differs significantly from low-frequency regimes.

Purpose of the Study:

  • To investigate the dominant high-frequency effects in a simple current-biased series Josephson array.
  • To analyze the character and stability of synchronized states in such arrays, particularly when external loads are absent.

Main Methods:

  • Modeling a current-biased series Josephson array with dominant high-frequency effects.
  • Analyzing the conditions for dynamic coupling and synchronization among oscillators.
  • Investigating the stability of identified synchronized states.

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Main Results:

  • High-frequency effects lead to dynamic coupling between oscillators, even in the absence of an external load.
  • Synchronized states can emerge and be attracting in these systems.
  • The character and stability of these synchronized states were determined.

Conclusions:

  • The dynamics of Josephson arrays at high frequencies present unique phenomena, including load-independent synchronization.
  • Understanding these synchronized states is crucial for applications involving high-frequency Josephson circuit dynamics.