The nature of quantum particles has long puzzled scientists. While single-particle interference suggests that a photon can ...

Light is both a wave and a particle – or so we have thought for about a hundred years. Since the advent of quantum physics, light has been understood to exhibit wave-particle duality. One part of this ...

Atoms inside of an optical cavity exchange their momentum states by "playing catch" with photons. As the atoms absorb photons from an applied laser, the whole cloud of atoms recoil rather than the ...

A theoretical study accepted by Physical Review Letters predicts that gravitational waves, the faint ripples in spacetime ...

In the final chapter, we will look at some controversial tests that might prove the correctness of the many-worlds interpretation beyond doubt. But there is one kind of experiment that has already ...

Hiroshima University researchers develop a new experimental method to demonstrate that interference physically delocalizes ...

In the late 1970s, legendary physicist John Wheeler proposed a radical question: Exactly when does the universe notice that we're paying attention to a quantum experiment? And does it really matter?

With the help of a new experiment, researchers at Linköping University, among others, have succeeded in confirming a ten-year-old theoretical study, which connects one of the most fundamental aspects ...