Quantum photonics

Figure 1: Light propagation inside a photonic crystal is forbidden by a propagation gap, hence common plane waves are reflected and hardly penetrate into the crystal. By shaping the incident waves, they can be steered deep into the crystal. (Image: COPS, University of Twente) 

Crossing the forbidden gap

A team of researchers has achieved a new level of control over light entering photonic crystals

Light focussed by nano-antennas on a gold surface leaks out by generating propagating plasmons. Image credit: Urban Senica, ETH Zurich

Southampton/ETH Zürich team sets new threshold of trapping light at the nanoscale

The fabrication of photonic resonators able to focus light in extremely small volumes is proving a key technology which is presently enabling advances in fields as different as material science, optoelectronics, chemistry, quantum technologies, and many others

Technology leaps in quantum sensing - Advances in nano magnetometry using tailored electronics and fast-switchable lasers

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Taking advantage of collective quantum effects has enabled the so-called first quantum revolution in the 20th century for technologies such as nuclear magnetic resonance spectroscopy, magnetic resonance imaging, and the development of transistors, LEDs, solar panels, and lasers. Today, amid the second quantum revolution new sensing schemes offer higher sensitivities and better resolution thanks to the possibility to detect and control individual quantum states in microscopic systems like atoms, quantum dots, or color centers.

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