论文标题
驱动量子约瑟夫森电路的结构稳定的次谐波制度
Structurally stable subharmonic regime of a driven quantum Josephson circuit
论文作者
论文摘要
驱动的量子非线性振荡器虽然对于量子技术必不可少，但通常容易出现复杂的混沌动力学，而这些动力学超出了扰动分析的范围。通过关注和谐驱动振荡器的亚谐波分叉，我们为选择振荡器参数提供了一种配方，该参数可确保独立于驱动强度的定期动力学行为。我们表明，这种混乱现象的抑制与稳定的亚谐波轨道跨越的堕落歧管中的限制率反映的强量子非线性效应兼容。
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.
