Quantum clocks and their synchronisation - the Alternate Ticks Game

Understand

Time plays a crucial role in the intuitive understanding of the world around us.

• Within quantum mechanics, however, time is not usually treated as an observable quantity; it enters merely as a parameter in the laws of motion of physical systems.
• Here we take an operational approach to time.
• Towards this goal we consider quantum clocks, i.e., quantum systems that generate an observable time scale.