Excitons—bound pairs of electrons and an electron hole—are quasiparticles that can arise in solids. While so-called "bright" ...

Here, the development of photon-induced near-field electron microscopy — an ingenious blend of these two imaging modalities — opens the way for direct space-time imaging of localized fields at ...

Researchers at the University of Innsbruck, along with those at Dortmund, Bayreuth, and Linz universities, have demonstrated ...

In a step that brings silicon-based quantum computers closer to reality, researchers at Princeton University have built a device in which a single electron can pass its quantum information to a ...

The few-photon TPA method is compatible with standard digital optical projection systems, offering a cost-effective, stable, and highly scalable pathway to next-generation nanomanufacturing.

Electrons are able to move from one energy level to another by emission or absorption of a quantum of energy, in the form of a photon. Because of the Pauli exclusion principle, no more than two ...

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Researchers at the University of Gothenburg have observed the absorption of a single electron by a levitated droplet with such a magnification that it is visible with ...

"The length of time between photon absorption and electron emission is very difficult to measure because it is only a matter of attoseconds," explains Till Jahnke, the PhD-supervisor of Jonas Rist.

The short pulses were necessary because of a two-photon absorption effect. Silicon atoms can absorb two photons simultaneously, generating an electron and a hole (the absence of an electron).

Entangled pairs: in this artistic representation of the experiment, a beam of free electrons (yellow) passes next to a ring-shaped microresonator (black). The evanescent interaction between an ...