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Quantum optics

Electrons bunch up in quantum light

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When photons impinge on a material, free electrons can be created by the photoelectric effect. The emitted electron current usually fluctuates with Poisson statistics, but if squeezed quantum light is applied, the electrons bunch up.

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Fig. 1: Electron emission with classical and quantum light.

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Correspondence to Alfred Leitenstorfer or Peter Baum.

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Leitenstorfer, A., Baum, P. Electrons bunch up in quantum light. Nat. Phys. (2024). https://doi.org/10.1038/s41567-024-02473-5

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