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Quantum optics

Wave–particle superposition


The implementation of a quantum Wheeler's delayed-choice experiment defies the conventional boundaries set by the complementarity principle and shows photons coherently oscillating between particle and wave behaviours in a single experimental set-up.

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Figure 1: Scheme of Wheeler's delayed-choice experiment with a quantum controller.


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Correspondence to Gerardo Adesso.

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Adesso, G., Girolami, D. Wave–particle superposition. Nature Photon 6, 579–580 (2012).

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