Scientists from the National University of Singapore (NUS) have shown that excitonic resonances and transitions between excitons can significantly increase the efficiency of generating entangled photon pairs. This could lead to the development of efficient ultrathin quantum light sources.

A research group led by scientists at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory has uncovered details about the formation and behavior of mobile, microscopic, particle-like objects called “excitons” in a class of materials known as van der Waals magnets.

The work, originating from ultrathin materials, could impact future electronics and establishes a new way to study these particles through a powerful instrument at the Brookhaven National Laboratory.

Scientists on the hunt for compact and robust sources of multicolored laser light have generated the first topological frequency comb. Their result, which relies on a small silicon nitride chip patterned with hundreds of microscopic rings, will appear in the June 21, 2024 issue of the journal Science.

Researchers have for the first time demonstrated that a specific class of oxide membranes can confine, or “squeeze,” infrared light – a finding that holds promise for next generation infrared imaging technologies. The thin-film membranes confine infrared light far better than bulk crystals, which are the established technology for infrared light confinement.

Hamamatsu Photonics K.K. (Hamamatsu City, Japan) is delighted to announce the completion of the acquisition of NKT Photonics A/S.

In research published in ACS Nano, TMOS researchers describe a solution to the on-chip light source problem that will significantly increase the integration density of photonic chips and lead to vastly higher processing powers. This will enable emerging technologies such as highly sophisticated AI and quantum computing to operate on smaller devices, such as mobile phones.

Rapid Test for Topological 2D Materials: Researchers from the Würzburg-Dresden Cluster of Excellence ct.qmat have developed a method with which two-dimensional topological materials can be detected more easily and quickly.

Single-photon emitters (SPEs) are akin to microscopic lightbulbs that emit only one photon (a quantum of light) at a time. These tiny structures hold immense importance for the development of quantum technology, particularly in applications such as secure communications and high-resolution imaging. However, many materials that contain SPEs are impractical for use in mass manufacturing due to their high cost and the difficulty of integrating them into complex devices.

The unique properties of quantum physics could help solve a longstanding problem that prevents microscopes from producing sharper images at the smallest scales, researchers say. The breakthrough, which uses entangled photons to create a new method of correcting for image distortion in microscopes, could lead to improved classical microscope imaging of tissue samples to help advance medical research.