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Using microheaters and a genetic algorithm optimization, deterministic phase-front shaping through a planar thermo-optical module can be realized, complementing the existing optical shaping toolbox by offering low-chromatic-aberration, polarization-insensitive and transmission-mode components.
Intracellular laser particles based on silica-coated semiconductor microcavities with distinct emission wavelengths allow real-time tracking of thousands of cells in a tumour model.
A high-speed wireless THz communication link is seamlessly integrated into a fibre-optic network. The demonstration relies on an ultra-broadband modulator exploiting two-dimensionally localized gap plasmons for direct conversion of the THz signals to the optical domain.
Long-lived, efficient organic light-emitting diodes based on a simple design of a single layer of an active light-emitting medium sandwiched between two contacts and no additional charge injection and transport layers are reported.
A low-noise, fast avalanche photodetector that operates in the 1,550 nm telecommunications band provides high sensitivity for data communications applications.
Through degenerate Kerr four-wave mixing in ultrahigh-Q crystalline microresonators made of magnesium fluoride, tunable conversion of a compact, low-power telecommunications laser over an entire optical octave from 1,083 nm to 2,670 nm, with signatures of mid-infrared sidebands at almost 4,000 nm, is shown.
The terahertz field-induced changes in the superconducting properties of a Nb3Sn film are investigated by time- and frequency-resolved terahertz spectroscopy. A gapless superconducting state and symmetry-forbidden odd-order coherent modes are observed.
An all-photonic quantum repeater is demonstrated by manipulating state-of-the-art 12-photon interferometry. The enhancement of entanglement-generation rate compared with parallel entanglement swapping proves the feasibility of the concept.
Combining resonant enhancement with nanophotonic mode engineering in a silicon nitride microring resonator allows spectral translation of a continuous-wave signal from the telecom band (~1,550 nm) to the visible band (~650 nm) through cavity-enhanced four-wave mixing with a translation efficiency of (30.1 ± 2.8)% at a pump power of (329 ± 13) μW.
Josephson vortices are observed at the boundary between two exciton-polariton condensates, with lasers used to create the required local phase twist. The finding opens new opportunities for exploring fundamental physics and engineering novel quantum devices.