A Quantum Delayed-Choice Experiment
A Quantum Delayed-Choice Experiment
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DOI：
10.1126/science.1226719
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发表时间：
2012-11-02
期刊：
影响因子：
56.9
通讯作者：
O'Brien, Jeremy L.
中科院分区：
文献类型：
--
作者：
Peruzzo, Alberto;Shadbolt, Peter;O'Brien, Jeremy L.
量子系统表现出粒子或波的行为取决于他们所面临的实验设备。这种波粒二象性是量子力学的核心。延迟选择思想实验最好地捕捉到了它的悖论性质，在这个实验中，光子被迫在观察者决定测量什么之前选择一种行为。在这里，我们报告的量子延迟选择实验中，粒子和波的行为同时进行调查。光子行为的真正量子性质是通过非定域性来证明的，它取代了原始实验中观察者的延迟选择。我们观察到强的非局域关联，这表明光子必须同时表现为粒子和波。
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.