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Physics World Optics & Photonics Briefing 2023

Physics World Optics & Photonics Briefing 2023

In the three decades since CERN made Tim Berners-Lee’s World Wide Web freely and openly available to everyone, we’ve got used to exchanging extraordinary amounts of data. One way of keeping up with the insatiable demand could be a new, energy-efficient single chip-based light source, which researchers have used to transmit a record-breaking 1.8 petabytes per second. Find out about this research breakthrough and many more besides in the latest free-to-read Physics World Optics and Photonics Briefing. It includes an interview with Tongtong Zhu – founder and chief executive of UK start-up Porotech, which makes micro-scale light-emitting diodes for full-colour displays.

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Illustration showing sun shining on an array of solar-energy-to-hydrogen devices located in shallow water. A lens system directs UV and visible light to the devices and infrared light to heat the water around them. research update

Mimicking photosynthesis to produce hydrogen

Peter Lodahl interview

Peter Lodahl and the Hy-Q team's quantum networks

Chips for the world research update

Single light source breaks data transmission rate record

opinion

Nonlinear resonator breaks dynamic optical nonreciprocity

Illustration of entanglement revival

Photon entanglement revives spontaneously

Photo of ultrathin on-chip solar cells fabricated from a stack of semiconducting materials. The cells are coloured as green squares and include an ultrathin layer of light-absorbing GaAs, which is key to their radiation tolerance research update

Thinner solar cells are more robust to space radiation

Smartphone camera oximeter research update

Measuring blood-oxygen levels with phone cameras

interview

Full colour materials science

Illustration of Mie resonances in a droplet research update

Flashing droplets could shed light on atomic physics and quantum tunnelling

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