Schematic of the MIT experiment: Two single atoms floating in a vacuum chamber are illuminated by a laser beam and act as the two slits. The interference of the scattered light is recorded with a ...

The original paper by Kim et al. on the Delayed Choice Quantum Eraser suggests the concept of retrocausality, which stems from classical interpretations. In quantum mechanics, particles exhibit ...

An experiment measuring a single atom's recoil confirmed that observing a particle destroys interference, settling the ...