Structurally Stable Subharmonic Regime of a Driven Quantum Josephson Circuit

Michiel Burgelman; Pierre Rouchon; Alain Sarlette; Mazyar Mirrahimi

doi:10.1103/PhysRevApplied.18.064044

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Structurally Stable Subharmonic Regime of a Driven Quantum Josephson Circuit

Michiel Burgelman, Pierre Rouchon, Alain Sarlette, Mazyar Mirrahimi

DOI 10.1103/PhysRevApplied.18.064044 · Physical Review Applied

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Abstract

Driven quantum nonlinear oscillators, while essential for quantum technologies, are generally prone to complex chaotic dynamics that fall beyond the reach of perturbative analysis. By focusing on subharmonic bifurcations of a harmonically driven oscillator, we provide a recipe for the choice of the oscillator’s parameters that ensures a regular dynamical behavior independently of the driving strength. We show that this suppression of chaotic phenomena is compatible with a strong quantum nonlinear effect reflected by the confinement rate in the degenerate manifold spanned by stable subharmonic orbits.