论文标题
从稳定固定点过渡到限制光学机械系统中循环的量子特征
Quantum signatures of transitions from stable fixed points to limit cycles in optomechanical systems
论文作者
论文摘要
由于其固有的非线性光力耦合，光力学系统具有不同类型运动的丰富非线性动力学。有趣的问题是，是否存在一些常见的量子特征来推断从一种类型到另一种类型的非线性动力学转变。在本文中，我们研究了从稳定固定点过渡的量子特征，以限制光学声子激光系统中的周期。我们的计算表明，从长远来看，稳定固定点的纠缠不会随着时间而变化，但是，它将在极限周期的机械振动频率下定期振荡。最引人注目的是，纠缠非常接近边界线是恒定的，并且对热声子噪声非常强大，就像这种特定经典过渡的强烈指示。
Optomechanical systems, due to its inherent nonlinear optomechanical coupling, owns rich nonlinear dynamics of different types of motion. The interesting question is that whether there exist some common quantum features to infer the nonlinear dynamical transitions from one type to another. In this paper, we have studied the quantum signatures of transitions from stable fixed points to limit cycles in an optomechanical phonon laser system. Our calculations show that the entanglement of stable fixed points in the long run does not change with time, however, it will oscillate periodically with time at the mechanical vibration frequency for the limit cycles. Most strikingly, the entanglement quite close to the boundary line keeps as a constant, and it is very robust to the thermal phonon noise, as strong indications of this particular classical transitions.
