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Guaranteed entanglement sharing over long distances can be verified by violating a Bell inequality. That's a tricky enough proposition in itself, but what if more than two parties are involved?
The advent of novel fluorophores that harness thermally activated energy transfer processes is resulting in a new breed of highly efficient organic light-emitting diodes.
A new experiment demonstrates the first unequivocally quantum two-particle interference with surface plasmons. Subwavelength optical quantum information processing may be just around the corner.
A source of entangled photons that emits one — and only one — pair of photons on demand has now been realized in a semiconductor chip. The solid-state source will be a useful resource for experiments in optical quantum information.
Researchers have demonstrated a compact, high-speed, surface-plasmon phase modulator that operates at telecommunication wavelengths over a wide range of operational conditions. It has the potential to boost the speed of future miniaturized integrated circuits.
A clever extension to a classic phase-contrast microscope allows speckle-free three-dimensional quantitative phase imaging of living cells in a tomographic imaging mode.
Quantum information processing provides novel methods for pumping heat and refrigerating photons. Devices that obtain and manipulate information at the quantum level can function as quantum 'Maxwell's demons' to cool systems in ways that liquid helium cannot.
An engineered defect in silicon carbide that acts as an artificial molecule is found to be the brightest room-temperature source of single photons presently available in a bulk material. This finding suggests that silicon carbide has a promising future for applications in quantum information processing.
Researchers have demonstrated high-harmonic generation using strong terahertz pulses in a bulk solid without damaging it. The mechanism underpinning such an extreme nonlinearity also generates coherent electromagnetic radiation covering the terahertz, infrared and optical regions.
Reports of perovskite solar cells fabricated at temperatures compatible with polymer substrates indicate that high-performance flexible cells are now an exciting proposition. However, increasing the cell area and stability and addressing environmental concerns are aspects requiring attention.
