Researchers at Columbia Engineering have developed a new class of integrated photonic devices--"leaky-wave metasurfaces"--that can convert light initially confined in an optical waveguide to an arbitrary optical pattern in free space.
A "beautiful effect" predicted by quantum electrodynamics (QED) can explain the puzzling first observations of polarized X-rays emitted by a magnetar – a neutron star featuring a powerful magnetic field, according to a Cornell astrophysicist.
Using a "spooky" phenomenon of quantum physics, Caltech researchers have discovered a way to double the resolution of light microscopes.
A team of researchers has demonstrated the ultimate sensitivity allowed by quantum physics in measuring the time delay between two photons.
Experts in nuclear physics and quantum information have demonstrated the application of a photon-number-resolving system to accurately resolve more than 100 photons.
Using lasers to slow down atoms is a technique that has been used for a long time already: If one wants to achieve low-temperature world records in the range of absolute temperature zero, one resorts to laser cooling, in which energy is extracted from the atoms with a suitable laser beam.
Solar panels with multiple stacked cells are currently breaking records. Remarkably, a team of researchers from Eindhoven University of Technology and TNO at Holst Centre have now managed to make photodiodes - based on a similar technology - with a photoelectron yield of more than 200 percent.
New estimates have denoted that quantum dots with finely-tuned spherical defects can display sophisticated “nonlinear” optical properties.
In the world around us processes appear to follow a certain time-direction: dandelions eventually turn into blowballs. However, the quantum realm does not play by the same rules.
The scientists, from the University of Cambridge, together with colleagues from Austria, the US, and Israel formulated a theory illustrating a new state of light, which has exploitable quantum properties across a wide range of frequencies, nearly as high as X-ray frequencies.