Small oscillators are everywhere around us, in clocks, computers, mobiles, but also in musical instruments, or biological cells, genes and neurons. As they become ultimitelly microscopic, their behaviour increasingly follows the counter-intuitive rules of quantum physics. 

Quantum oscillators are elementary physical systems but still with a large capacity. When quantized, they simultaneously exhibiting both continuous-wave and discrete-particle quantum interference features. Approximating their quantum noise as Gaussian in their oscillatory amplitudes, they already have a number of applications in science and technology beyond the framework of classical physics. Quantum metrology, communication and also quantum control broadly use linearized quantum oscillators with Gaussian states.

  Now, highly nonlinear oscillators with qantum non-Gaussian physics are currently opening unexplored and extremely large territory.  

Quantum optics, atomic physics, solid-state physics, condense-matter physics, quantum electromechanics and optomechanics, quantum cavity/circuit electrodynamics and physics of trapped atoms/ions are increasingly excellent platforms for testing and understanding of these nonlinear oscillator phenomena in quantum regime and their applications.

           Most high-order nonlinearities and underlying non-Gaussian quantum phenomena 
                                         and their applications are still largely undiscovered.

                                             It is an adventure and the chance right now.