Coherence of a charge stabilised tin-vacancy spin in diamond
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 l...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2022-04-01
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| Series: | npj Quantum Information |
| Online Access: | https://doi.org/10.1038/s41534-022-00552-0 |
| _version_ | 1811289486122811392 |
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| author | Johannes Görlitz Dennis Herrmann Philipp Fuchs Takayuki Iwasaki Takashi Taniguchi Detlef Rogalla David Hardeman Pierre-Olivier Colard Matthew Markham Mutsuko Hatano Christoph Becher |
| author_facet | Johannes Görlitz Dennis Herrmann Philipp Fuchs Takayuki Iwasaki Takashi Taniguchi Detlef Rogalla David Hardeman Pierre-Olivier Colard Matthew Markham Mutsuko Hatano Christoph Becher |
| author_sort | Johannes Görlitz |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-13T03:55:39Z |
| format | Article |
| id | doaj.art-9095f81db95a489e99c7a6a7f3ec0f89 |
| institution | Directory Open Access Journal |
| issn | 2056-6387 |
| language | English |
| last_indexed | 2024-04-13T03:55:39Z |
| publishDate | 2022-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Information |
| spelling | doaj.art-9095f81db95a489e99c7a6a7f3ec0f892022-12-22T03:03:39ZengNature Portfolionpj Quantum Information2056-63872022-04-01811910.1038/s41534-022-00552-0Coherence of a charge stabilised tin-vacancy spin in diamondJohannes Görlitz0Dennis Herrmann1Philipp Fuchs2Takayuki Iwasaki3Takashi Taniguchi4Detlef Rogalla5David Hardeman6Pierre-Olivier Colard7Matthew Markham8Mutsuko Hatano9Christoph Becher10Fachrichtung Physik, Universität des SaarlandesFachrichtung Physik, Universität des SaarlandesFachrichtung Physik, Universität des SaarlandesDepartment of Electrical and Electronic Engineering, Tokyo Institute of TechnologyInternational Center for Materials Nanoarchitectonics, National Institute for Materials ScienceRUBION, Ruhr-Universität Bochum, Universitätsstraße 150Element Six Global Innovation CentreElement Six Global Innovation CentreElement Six Global Innovation CentreDepartment of Electrical and Electronic Engineering, Tokyo Institute of TechnologyFachrichtung Physik, Universität des SaarlandesAbstract 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.https://doi.org/10.1038/s41534-022-00552-0 |
| spellingShingle | Johannes Görlitz Dennis Herrmann Philipp Fuchs Takayuki Iwasaki Takashi Taniguchi Detlef Rogalla David Hardeman Pierre-Olivier Colard Matthew Markham Mutsuko Hatano Christoph Becher Coherence of a charge stabilised tin-vacancy spin in diamond npj Quantum Information |
| title | Coherence of a charge stabilised tin-vacancy spin in diamond |
| title_full | Coherence of a charge stabilised tin-vacancy spin in diamond |
| title_fullStr | Coherence of a charge stabilised tin-vacancy spin in diamond |
| title_full_unstemmed | Coherence of a charge stabilised tin-vacancy spin in diamond |
| title_short | Coherence of a charge stabilised tin-vacancy spin in diamond |
| title_sort | coherence of a charge stabilised tin vacancy spin in diamond |
| url | https://doi.org/10.1038/s41534-022-00552-0 |
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