Picosecond acoustic pulses can be used to shift the optical transition energy of a quantum dot towards the resonance frequency of a microcavity, thus temporarily causing the device to lase. This ultrafast modulation technique has significant potential for exploring phenomena throughout quantum physics.
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Nomura, M., Arakawa, Y. Shaking quantum dots. Nature Photon 6, 9–10 (2012). https://doi.org/10.1038/nphoton.2011.323
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DOI: https://doi.org/10.1038/nphoton.2011.323