The quantum timekeeping of atomic clocks

David J. Wineland, Jonas Bergquist, J. J. Bollinger +2 more

Andrew Grant

Christopher R. Monroe

Mark Buchanan

The Costs of Quantum Timekeeping Experiments reveal the surprisingly large amount of entropy-and thus heat-generated by a clock that could be part of a quantum processor.

Jun Ye

Andrew D. Ludlow

An optical clock based on an array of individually trapped atoms provides a new twist in atom-based timekeeping.