The Precision and Quantum Measurement Laboratory (PQM lab) at Inter University Centre for Astronomy and Astrophysics is ...

After that, ytterbium ions cool the system through Doppler cooling. A rectangular pulse, 150 milliseconds long, probes the clock transition in the indium ion.

Scientists propose using quantum-entangled clocks to test how gravity affects quantum mechanics in curved spacetime.

A test using atomic clocks will watch superpositions ride Earth’s curved space-time and see if Einstein can play nice with quantum mechanics ...

Evolution of Atomic Clocks 1949 – The First Atomic Clock ・Harold Lyons at the U.S. National Bureau of Standards (now NIST) developed the first atomic clock using the ammonia molecule.

The high level of accuracy has now also been demonstrated in a new type of clock that has the potential to measure time and frequency 1000 times more accurately than the caesium clocks that currently ...