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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Electron collimation using a photon MLC could improve clinical workflow and enable advanced delivery techniques ...

"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 ...