The ability to optically drive a single electron spin confined to a quantum dot from an absorbing state to a trapped coherent dark state could be the key to realizing optical switches and other quantum optical devices.
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Bayer, M. Quantum optics with dots. Nature Phys 4, 678–679 (2008). https://doi.org/10.1038/nphys1065
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DOI: https://doi.org/10.1038/nphys1065
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