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Hidden Silicon-Vacancy Centers in Diamond

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arxiv 2006.02323 v3 pith:2NIDGVKK submitted 2020-06-03 quant-ph cond-mat.mtrl-sciphysics.app-ph

Christopher L. Smallwood , Ronald Ulbricht , Matthew W. Day , Tim Schröder , Kelsey M. Bates , Travis M. Autry , Geoffrey Diederich , Edward Bielejec
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Mark E. Siemens Steven T. Cundiff
This is my paper · ORCID
classification quant-phcond-mat.mtrl-sciphysics.app-ph
keywords centersdiamondhiddensilicon-vacancycausedcharacterizechargedcoherence
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abstract

We characterize a high-density sample of negatively charged silicon-vacancy (SiV$^-$) centers in diamond using collinear optical multidimensional coherent spectroscopy. By comparing the results of complementary signal detection schemes, we identify a hidden population of \ce{SiV^-} centers that is not typically observed in photoluminescence, and which exhibits significant spectral inhomogeneity and extended electronic $T_2$ times. The phenomenon is likely caused by strain, indicating a potential mechanism for controlling electric coherence in color-center-based quantum devices.

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