Characterization of optical and spin properties of single tin-vacancy centers in diamond nanopillars
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2019-05-16 |
| Journal | Physical review. B./Physical review. B |
| Authors | Alison E. Rugar, Constantin Dory, Shuo Sun, Jelena VuÄkoviÄ |
| Institutions | Stanford University |
| Citations | 69 |
Abstract
Section titled āAbstractāColor centers in diamond have attracted much interest as candidates for\noptically active, solid-state quantum bits. Of particular interest are\ninversion-symmetric color centers based on group-IV impurities in diamond\nbecause they emit strongly into their zero-phonon lines and are insensitive to\nelectric field noise to first order. Early studies of the negatively-charged\ntin-vacancy (SnV$^{-}$) center in diamond have found the SnV$^{-}$ to be a\npromising candidate: it has high quantum efficiency, emits strongly into its\nzero-phonon lines, and is expected to have a long $T_2$ spin coherence time at\n4~K. To develop the SnV$^{-}$ into a spin qubit requires further\ncharacterization, especially of the spin and optical properties of individual\nSnV$^{-}$ in nanofabricated structures. In this work we isolate single\nSnV$^{-}$ centers in diamond nanopillars and characterize their emission\nproperties and their spin response to a magnetic field. We observe narrow\nemission linewidths that are spectrometer-limited, as well as a strong\npolarization dependence of each transition. We also find the Zeeman splitting\nunder a magnetic field to be in good agreement with theoretical prediction. Our\nresults pave the way toward future employment of single SnV$^{-}$s for\noptically accessible quantum memories.\n