Performance "Quantum oscillator"

      Oscillation is the repetitive variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. Familiar examples include a swinging pendulum  and AC( alternating current)  power. The term vibration  is sometimes used more narrowly to mean a mechanical oscillation but is sometimes used as a synonym of "oscillation". Oscillations occur not only in mechanical systems but also in biological systems , from human  society   to the  brain.