Quantum technologies are cutting-edge systems that can process, transfer, or store information leveraging quantum mechanical effects, particularly a phenomenon known as quantum entanglement. Entanglement entails a correlation between two or more distant particles, whereby measuring the state of one also defines the state of the others.

Phys is a blog or publication focused on physics, science, and mathematics. Readers can explore articles covering topics such as quantum mechanics, relativity, and cosmology. Additionally, they can learn about mathematical concepts, scientific theories, and the latest research in physics.

Phys.org

Researchers developed an electrically powered entangled photon source integrated on a single chip, eliminating the need for bulky external lasers. The device combines a distributed feedback laser with a thin-film lithium niobate photonic chip to generate polarization-entangled photon pairs. It achieves high brightness (4.5×10¹⁰ pairs/s/mW) and broad bandwidth (73 nm) while operating at room temperature. This compact, stable platform could enable scalable quantum key distribution, satellite-based quantum communication, and quantum metrology applications, advancing the transition of quantum technologies from laboratory to real-world deployment.

An electrically powered source of entangled light on a chip

The reliable entanglement of photons on-chip

Fueling the development of quantum photonic systems