Investigation of the Stark Effect on a Centrosymmetric Quantum Emitter in Diamond

Lorenzo De Santis, Matthew E. Trusheim, Kevin C. Chen, Dirk R. Englund

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Abstract

Quantum emitters in diamond are leading optically accessible solid-state qubits. Among these, Group IV-vacancy defect centers have attracted great interest as coherent and stable optical interfaces to long-lived spin states. Theory indicates that their inversion symmetry provides first-order insensitivity to stray electric fields, a common limitation for optical coherence in any host material. Here we experimentally quantify this electric field dependence via an external electric field applied to individual tin-vacancy (SnV) centers in diamond. These measurements reveal that the permanent electric dipole moment and polarizability are at least 4 orders of magnitude smaller than for the diamond nitrogen vacancy (NV) centers, representing the first direct measurement of the inversion symmetry protection of a Group IV defect in diamond. Moreover, we show that by modulating the electric-field-induced dipole we can use the SnV as a nanoscale probe of local electric field noise, and we employ this technique to highlight the effect of spectral diffusion on the SnV.

Original languageEnglish
Article number147402
Number of pages6
JournalPhysical Review Letters
Volume127
Issue number14
DOIs
Publication statusPublished - 2021

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