Researchers control individual quanta of light at very high speeds
A focused laser beam (left, blue) generates single photos by a single quantum dot inside photonic waveguides (red), which are fabricated on top of crystalline gallium arsenide – (GaAs-) aluminum gallium arsenide (Al0.2Ga0.8As).Two interdigital electrodes (interdigital transducers, IDTs) generate nanoscale sound waves (surface acoustic waves, SAWs), which dynamically stress the waveguides . The nanoscale sound …
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