Semiconductor quantum dots are nanoscale crystals that confine charge carriers in all three spatial dimensions, yielding discrete energy levels akin to artificial atoms. When optically or electrically ...

A research team in China has built a quantum dot device that produces photon pairs with record-setting purity, achieving a two-photon fraction of 0.983(1). The work, published in Nature Materials, ...

The new approach uses a purely optical technique called stimulated two-photon excitation to generate streams of photons in different polarization states directly from a quantum dot without requiring ...

Using this effect, they achieved the first experimental demonstration of entanglement swapping via single-photon SFG. This achievement is expected to pave the way for miniaturized and efficient ...

A group of South Korean researchers has successfully developed an integrated quantum circuit chip using photons (light particles). It is a system capable of controlling eight photons using a photonic ...

Quantum communication Artist’s impression of a quantum network. This latest research could lead to quantum dots being used as quantum repeaters in future implementations. (Courtesy: iStock/Quardia) A ...

One of the biggest hurdles in building quantum networks is showing that quantum information can be transferred between devices that are not inherently compatible. But one Europe-wide research ...

A team of researchers of the University of Stuttgart and Julius-Maximilians-Universität Würzburg led by Stuttgart’s Prof. Stefanie Barz has demonstrated a source of single photons that combines ...

Sparrow Quantum, a Copenhagen-based startup specializing in single-photon emitters suitable for a range of quantum technology applications, has raised €21.5 million in a series A funding round. Led by ...