Toward bulk crystal coherence times in Eu 3+ :Y 2 O 3 nanocrystals
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We present the coherent properties of the 7F 0 ↔5D 0 transition of Eu3+ dopants in Y 2 O 3 nanoparticles, including homogeneous linewidths less than 50 kHz. Such narrow transitions create opportunities for hybrid quantum systems on the nanoscale.
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