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Rabi-type oscillations in a classical Josephson junction.

Niels Grønbech-Jensen1, Matteo Cirillo

  • 1Department of Applied Science, University of California, Davis, California 95616, USA.

Physical Review Letters
|August 11, 2005
PubMed
Summary

We found that classical Josephson junctions exhibit phase modulation, creating oscillations similar to quantum Rabi oscillations. This phenomenon occurs in the zero-voltage state when phase-locked to an AC field.

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Area of Science:

  • * Condensed Matter Physics
  • * Quantum Optics
  • * Nonlinear Dynamics

Background:

  • * Josephson tunnel junctions are fundamental superconducting devices.
  • * Phase-locking to external fields is crucial for device applications.
  • * Classical systems can exhibit phenomena analogous to quantum mechanics.

Purpose of the Study:

  • * To analytically and numerically investigate phase-modulation properties in classical Josephson junctions.
  • * To understand the dynamics of phase-locked states under perturbations.
  • * To explore the analogy between classical Josephson junction oscillations and quantum Rabi oscillations.

Main Methods:

  • * Analytical calculations of phase-modulation properties.
  • * Numerical simulations of Josephson junction dynamics.

Related Experiment Videos

  • * Parameter-dependent frequency analysis of modulation.

    • Main Results:

    • * Demonstrated phase modulation in the transients of a phase-locked classical Josephson junction.
    • * Calculated the modulation frequency as a function of system parameters, including microwave field amplitude.
    • * Identified oscillations analogous to quantum mechanical Rabi oscillations.

    Conclusions:

    • * Classical Josephson junctions, when phase-locked, exhibit transient phase modulation.
    • * The observed oscillations are analogous to quantum Rabi oscillations, suggesting a classical pathway to similar phenomena.
    • * This finding opens avenues for exploring quantum-like behaviors in classical superconducting systems.