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Localized States in 2D Materials Act as Quantum Dots that Emit Light

Researchers at Columbia Engineering and Montana State University report today that they have found that placing sufficient strain in a 2D material--tungsten diselenide (WSe2)--creates localized states that can yield single-photon emitters.

14 Jul 2020

New Process to Fabricate Coupled Nanocrystals Could Improve Optoelectronics

An in-depth understanding of the fundamental science behind familiar techniques used to create quantum dots, which are tiny semiconducting nanocrystals, could help minimize the guesswork of existing practices used by material scientists to develop better digital displays and solar panels.

13 Jul 2020

Innovative Device Emits Photons from Quantum Dots

Researchers at CRANN and the School of Physics at Trinity College Dublin have created an innovative new device that will emit single particles of light, or photons, from quantum dots that are the key to practical quantum computers, quantum communications, and other quantum devices.

8 Jul 2020

Ultrashort Electric Pulses Allow Faster and Energy-Efficient Data Processing

Physicists at Martin Luther University Halle-Wittenberg and Lanzhou University in China developed a simple concept that could improve significantly magnetic-based data processing.

3 Jul 2020

Study Unveils Nonlinear Optical Mechanism Caused by Electron Tunneling

Steering and monitoring the light-driven motion of electrons inside matter on the time-scale of a single optical cycle is a key challenge in ultrafast light wave electronics and laser-based material processing.

1 Jul 2020

Laser-Driven Proton Radiography Used to Measure Magnetic Fields in Plasma

The magnetic structures resulting from a plasma instability predicted by the physicist Erich Weibel about 50 years ago has been evidenced at surprisingly large scales in a laser-driven plasma in the prestigious journal Nature Physics.

25 Jun 2020

Lasers can Redefine Bio-Imaging and Quantum Communication

A research team has applied an infrared laser technique to cool a solid semiconductor. As demonstrated by the researchers in a study published in Nature Communications on June 23rd, 2020, an infrared laser could be used to refrigerate the solid semiconductor by a minimum of 36 °F, or 20 °C, below room temperature.

24 Jun 2020