期刊
SCIENCE
卷 338, 期 6107, 页码 634-637出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1226719
关键词
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资金
- UK Engineering and Physical Sciences Research Council (EPSRC)
- European Research Council (ERC)
- Quantum Integrated Photonics (QUANTIP) project
- Toolbox for Photon Orbital Angular Momentum Technology (PHORBITECH) project
- Quantum InterfacES
- SENsors
- Communication based on Entanglement (Q-ESSENCE) integrating project
- Nokia
- Centre for Nanoscience and Quantum Information (NSQI)
- Templeton Foundation
- European Union Union Device-Independent Quantum Information Processing (DIQIP) project
- Royal Society Wolfson Merit Award
- Royal Academy of Engineering Research Fellowship
- Engineering and Physical Sciences Research Council [EP/F010524/1, EP/J017175/1] Funding Source: researchfish
- EPSRC [EP/F010524/1, EP/J017175/1] Funding Source: UKRI
Quantum systems exhibit particle-or wavelike behavior depending on the experimental apparatus they are confronted by. This wave-particle duality is at the heart of quantum mechanics. Its paradoxical nature is best captured in the delayed-choice thought experiment, in which a photon is forced to choose a behavior before the observer decides what to measure. Here, we report on a quantum delayed-choice experiment in which both particle and wave behaviors are investigated simultaneously. The genuinely quantum nature of the photon's behavior is certified via nonlocality, which here replaces the delayed choice of the observer in the original experiment. We observed strong nonlocal correlations, which show that the photon must simultaneously behave both as a particle and as a wave.
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