Nitrogen-vacancy center
Point defect in diamonds / From Wikipedia, the free encyclopedia
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The nitrogen-vacancy center (N-V center or NV center) is one of numerous photoluminescent point defects in diamond. Its most explored and useful properties include its spin-dependent photoluminescence (which enables measurement of the electronic spin state using optically detected magnetic resonance), and its relatively long (millisecond) spin coherence at room temperature.[1] The NV center energy levels are modified by magnetic fields,[2] electric fields,[3] temperature,[4] and strain,[5] which allow it to serve as a sensor of a variety of physical phenomena. Its atomic size and spin properties can form the basis for useful quantum sensors.[6] It has also been explored for applications in quantum computing (e.g. for entanglement generation[7]) and spintronics.[8]