Bakemeier L, Alvermann A, Fehske H
Institut für Physik, Ernst-Moritz-Arndt-Universität, 17487 Greifswald, Germany.
Phys Rev Lett. 2015 Jan 9;114(1):013601. doi: 10.1103/PhysRevLett.114.013601. Epub 2015 Jan 7.
We establish the emergence of chaotic motion in optomechanical systems. Chaos appears at negative detuning for experimentally accessible values of the pump power and other system parameters. We describe the sequence of period-doubling bifurcations that leads to chaos and state the experimentally observable signatures in the optical spectrum. In addition to the semiclassical dynamics, we analyze the possibility of chaotic motion in the quantum regime. We find that quantum mechanics protects the optomechanical system against irregular dynamics, such that simple periodic orbits reappear and replace the classically chaotic motion. In this way observation of the dynamical signatures makes it possible to pin down the crossover from quantum to classical mechanics.
我们确定了光机械系统中混沌运动的出现。对于泵浦功率和其他系统参数的实验可及值，在负失谐时会出现混沌。我们描述了导致混沌的倍周期分岔序列，并阐述了光谱中实验可观测的特征。除了半经典动力学，我们还分析了量子 regime 中混沌运动的可能性。我们发现量子力学保护光机械系统免受不规则动力学影响，使得简单的周期轨道重新出现并取代经典混沌运动。通过这种方式，对动力学特征的观测使得确定从量子力学到经典力学的转变成为可能。
