In the photonic synthetic dimension, the coupling of internal degrees of freedom of photons, such as frequency, spatial mode, and orbital angular momentum, generates extra dimensions in addition to ...

In the lab: David Allemeier, PhD student and first author on the paper describing the microcavities, checks a new bottle of NPB, which is used as the hole transport layer in the OLEDs. (Courtesy: ...

Periodically modulating optical properties of a material on the order of the wavelength of light affect the propagation of light in this material dramatically. Important representatives of such ...

Researchers have devised a straightforward method to probe the band geometry using ultracold atoms in an optical lattice. MPQ/LMU scientists devise new interferometer to probe the geometry of band ...

Despite a deep understanding of the properties of individual atoms -- the 'ingredients' that make up a crystal -- scientists found that, when they are combined they often display new, unanticipated ...

A new technique for measuring the electronic band structure of solid materials has been unveiled by physicists in Canada. The new method does not require the sample to be placed in a vacuum chamber ...

"A flat band in a band structure is a very special type of frequency band where the group velocity remains zero across all wavenumbers," Bilal explains. "In practical terms, this means that sound ...

Despite a deep understanding of the properties of individual atoms - the "ingredients" that make up a crystal - scientists found that, when they are combined they often display new, unanticipated ...