Yellow Diamond (IMAGE)

Harvard University

Yellow Diamond

Caption

Imperfections in diamond can give the crystals a characteristic color. Nitrogen in these tiny diamonds (top) turns them yellow. (Microdiamond powder provided by Daniel Twitchen and the Element Six company [UK].) Some imperfections, including the nitrogen-vacancies explored in this work, are luminescent (can emit red photons one at a time) and behave as excellent optically addressable quantum memory. The chip (bottom right) consists of diamond with a silver layer on top.

Credit

Eliza Grinnell / Harvard SEAS

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