Journal
ACS PHOTONICS
Volume 4, Issue 10, Pages 2580-2586Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.7b00904
Keywords
diamond; color centers; ion implantation; single-photon; tin
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Funding
- DIESIS Project - Italian National Institute of Nuclear Physics (INFN) - CSNS within the Young Research Grant scheme
- International Atomic Energy Agency (IAEA) [F11020]
- EMPIR [14IND05-MIQC2]
- NATO [G5263]
- MIUR
- Volkswagen Stiftung
- CERIC ERIC Consortium [20162021]
- Erasmus Traineeship program
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The fabrication of luminescent defects in single-crystal diamond upon Sn implantation and annealing is reported. The relevant spectral features of the optical centers (emission peaks at 593.5, 620.3, 630.7, and 646.7 nm) are attributed to Sn-related defects through the correlation of their photoluminescence (PL) intensity with the implantation fluence. Single Sn-related defects were identified and characterized through the acquisition of their second-order autocorrelation emission functions, by means of Hanbury-Brown and Twiss interferometry. The investigation of their single-photon emission regime as a function of excitation laser power revealed that Sn-related defects are based on three-level systems with a 6 ns radiative decay lifetime. In a fraction of the studied centers, the observation of a blinking PL emission is indicative of the existence of a dark state. Furthermore, absorption dependence on the polarization of the excitation radiation with similar to 45% contrast was measured. This work shed light on the existence of a new optical center associated with a group-IV impurity in diamond, with similar photophysical properties to the already well-known Si-V and Ge-V emitters, thus, providing results of interest from both the fundamental and applicative points of view.
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