Research

Conceptual diagram of the world’s fastest two-qubit gate. Two atoms captured in optical tweezers (red light) with a separation of a micrometre are manipulated by an ultrafast laser pulse (blue light) shone for only 10 picoseconds. (Image: Dr Takafumi Tomita)

Researchers achieve 'breakthrough' in the realisation of ultrafast quantum computers

An exceptionally fast qubit gate has been developed, representing completely new quantum computer hardware that breaks through the limitations of previous formats

Gentle high-temperature crystallisation: Fraunhofer ILT, together with Fraunhofer ISIT and IST, has developed a selective, laser-based crystallisation process for the manufacture of MEMS sensor units directly on active circuits. (Image: Fraunhofer ILT)

Laser process to optimise MEMS sensor size and performance

Researchers are using laser-based crystallisation to eliminate the need for wires and solder joints in the monolithic integration of MEMS sensors

For the experiment, the holographic images were visualised using an optical path consisting of a continuum laser, iris, lens, the sample and an optical screen. Credit: Qi Dai, Wuhan University

Metasurface creates three different images depending on illumination

The three-channel device could be used as an anticounterfeiting measure or offer a new way to securely deliver encrypted information

The nulling interferometry devices under development at Caltech’s Exoplanet Technology Laboratory cancel out starlight to help detect and identify foreign worlds. (Credit: Shutterstock/Dotted Yeti)

Emerging astrophotonics technologies

Nemanja Jovanovic, lead instrument scientist at Caltech’s Optical Observatory and Exoplanet Technology Laboratory, on emerging astrophotonic technologies on his radar

The laser enables ghostly lettering to be drawn in mid-air, which is viewable from all angles. (Image: Hongtuo Ultrafast Laser Joint Laboratory) 

Researchers 'write' in mid-air using ultrashort pulse lasers

Lasers have previously been able to produce optical illusions, however have required a dust/cloud medium in order to do so

CO2 laser welding creates reliable fibre couplings for glass-based photonic integrated circuits – an excellent alternative to currently adhesive-based methods. (Image: Fraunhofer IZM)

Laser welding replaces adhesives in PIC production

The new process is designed as an alternative to adhesive-based fibre interconnection strategies for PICs

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