Scientists present the most accurate time measurements of quantum jumps to date
Vienna University Of Technology
One of the electron is ripped out of the atom, the other electron may change its quantum state. Credit: TU Wien When a quantum system changes its state, this is called a quantum jump. Usually, these quantum jumps are considered to be instantaneous. The Most Accurate Time Measurement of Quantum Jumps A neutral helium atom has two electrons. It remains in the atom, but it is lifted up to a state of higher energy, says Stefan Nagele (TU Wien).