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By exploiting one-dimensional photonic crystal nanocavities, an ultra-compact indium phosphide-on-silicon laser diode with low current threshold, high wall-plug efficiency and high integrability is demonstrated.
Hybrid perovskite crystals are integrated onto silicon wafers enabling fabrication of an X-ray linear detector array. High sensitivity may reduce patient dose in medical imaging applications.
Researchers use hyperbolic metamaterials to make an integrated Cherenkov light source and relax the electron energy requirements. Radiation covering the visible range and near-infrared is achieved with electron energies of only 0.25–1.4 keV.
Ground-state spin rotations in a nitrogen–vacancy centre in diamond are manipulated within nanoseconds of a near-resonant light field being applied. Pauli quantum gates are demonstrated using the geometric spin preparation and read-out techniques.
A laser–plasma accelerator delivering 5-MeV electrons at kHz repetition rate is demonstrated. It is achieved in the laser-wakefield-acceleration regime by using a multi-mJ laser system delivering near-single-cycle laser pulses of 3.4-fs duration.
Combining attosecond science and nanophotonics potentially offers a route to enhance control over light–matter interactions at the nanoscale and provide a promising platform for information processing.
It has been revealed that simple anisotropic optical waveguides and the vectorial nature of electromagnetic waves can support a variety of bound states in the continuum akin to those introduced in quantum mechanics almost a century ago.
The emission direction and timing of extreme-ultraviolet light can now be manipulated through an opto-optical approach that uses an infrared pulse to control the spatial and spectral phase of free induction decay resulting from atoms excited by attosecond light.
