A century-old thought experiment on wave–particle duality is brought into the laboratory using a single trapped atom ...

Two landmark quantum experiments have sharpened one of the oldest arguments in modern physics, and the verdict is not kind to Albert Einstein’s instincts about reality. By stripping classic thought ...

When two particles are entangled, the state of one is tied to the state of the other. Victor de Schwanberg/Science Photo Library via Getty Images The 2022 Nobel Prize in physics recognized three ...

Albert Einstein was well known for his thought experiments involving complex scientific ideas. Often he used real-world examples that helped non-scientists grasp his theories of relativity. He started ...