Quantum interference offers a radically different way to measure time
A new “quantum watch” uses changing interference patterns inside excited helium atoms to determine how much time has…
Scientists observe ‘negative time’ for the first time in a quantum experiment
A photon enters a cloud of atoms and emerges on the other side. When physicists calculate how long…
Positronium finally shows wave behavior in landmark quantum experiment
Quantum physics overturned classical ideas by showing that matter behaves very differently at the smallest scales. One of…