Two-photon emission is a relatively weak emission process, about five orders of magnitude weaker than the usual single-photon emission that occurs in semiconductor lasers or LEDs. So we had to use ...

The simultaneous capability of colloidal QDs to sustain robust room-temperature spin quantum coherence and to engage in ...

The James Webb Space Telescope (JWST) has redefined humanity's capacity to study the cosmos. Its unprecedented sensitivity in ...

This knowledge builds upon decades of quantum physics research. Until now, scientists could only model photon emission in idealized conditions, such as a perfect vacuum with a single atom.

A groundbreaking study has revealed a new regime of cooperative radiative phenomena, addressing a 70-year-old puzzle in ...

This means that each electron transition will produce a photon of a different frequency and hence a different colour. This causes line emission spectra to be produced, as shown below. This is not ...

This dwell time before re-emission is what is confusing to many ... If one were to think of this pulse as discrete quanta of photon particles, it’d seem to break causality, but as a wave ...

Procedures such as X-rays; computed tomography (CT); magnetic resonance imaging (MRI); positron emission tomography (PET) and single-photon emission computed tomography (SPECT) are important in ...

The findings, published in Advanced Optical Materials, represent a major step forward in the development of on-chip photonic ...

In a groundbreaking study, researchers have successfully developed new nanoscale force sensors made from luminescent ...