Jump Chaotic Behaviour of Ultra Low Loss Bulk Acoustic Wave Cavities

摘要: We demonstrate a previously unobserved nonlinear phenomenon in an ultra-low loss quartz Bulk Acoustic Wave cavity ($Q>3\times10^9$), which only occurs below 20 milli-Kelvin temperature and under relatively weak pumping. The reveals the emergence of several stable equilibria (at least two foci nodes) jumps between these quasi states at random times. degree this randomness as well separations levels can be controlled by frequency incident carrier signal. It is demonstrated that nature effect lays beyond standard Duffing model.