Strange quantum experiment shows “negative time” is more than an illusion

Strange quantum experiment shows “negative time” is more than an illusion. Photons traveling through a cloud of atoms can emerge so early that they appear to have spent a negative amount of time inside.

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Trechos de apoio da pauta: Photons traveling through a cloud of atoms can emerge so early that they appear to have spent a negative amount of time inside. Researchers tested whether this was merely a misleading feature of the light pulse by making extremely weak measurements of the atoms.

• Ponto de atenção: strange.
• Ponto de atenção: quantum.
• Ponto de atenção: experiment.

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