Please use this identifier to cite or link to this item: doi:10.22028/D291-36395
Title: Coherence of a charge stabilised tin-vacancy spin in diamond
Author(s): Görlitz, Johannes
Herrmann, Dennis
Fuchs, Philipp
Iwasaki, Takayuki
Taniguchi, Takashi
Rogalla, Detlef
Hardeman, David
Colard, Pierre-Olivier
Markham, Matthew
Hatano, Mutsuko
Becher, Christoph
Language: English
Title: npj Quantum Information
Volume: 8
Issue: 1
Publisher/Platform: Springer Nature
Year of Publication: 2022
Free key words: Quantum optics
Single photons and quantum effects
DDC notations: 500 Science
Publikation type: Journal Article
Abstract: Quantum information processing (QIP) with solid state spin qubits strongly depends on the efficient initialisation of the qubit’s desired charge state. While the negatively charged tin-vacancy (SnV−) centre in diamond has emerged as an excellent platform for realising QIP protocols due to long spin coherence times at liquid helium temperature and lifetime limited optical transitions, its usefulness is severely limited by termination of the fluorescence under resonant excitation. Here, we unveil the underlying charge cycle, potentially applicable to all group IV-vacancy (G4V) centres, and exploit it to demonstrate highly efficient and rapid initialisation of the desired negative charge state of single SnV centres while preserving long term stable optical resonances. In addition to investigating the optical coherence, we all-optically probe the coherence of the ground state spins by means of coherent population trapping and find a spin dephasing time of 5(1) μs. Furthermore, we demonstrate proof-of-principle single shot spin state readout without the necessity of a magnetic field aligned to the symmetry axis of the defect.
DOI of the first publication: 10.1038/s41534-022-00552-0
URL of the first publication:
Link to this record: urn:nbn:de:bsz:291--ds-363952
ISSN: 2056-6387
Date of registration: 8-Jun-2022
Description of the related object: Supplementary information
Related object:
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Physik
Professorship: NT - Prof. Dr. Christoph Becher
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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