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A composite cavity QED system, which couples nitrogen vacancy centers in a diamond nanopillar to whispering gallery modes in a silica microsphere and overcomes limitations of earlier diamond nanocrystal based systems, is demonstrated.
Summary form only given. The physical nature of photoluminescence (PL) from semiconductor nanocrystals has been a subject of considerable debate. Earlier studies using organically-capped nanocrystals have shown that the PL arises primarily from dark excitonic states with a radiative lifetime of order microseconds. Recent advances in developing inorganically-capped nanocrystals have led to much improved...
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