All-optical quantum thermometry based on spin-level cross-relaxation and multicenter entanglement under ambient conditions in SiC
All-optical thermometry technique based on the energy level cross-relaxation in atomic-scale spin centers in SiC is demonstrated. This technique exploits a giant thermal shift of the zero-field splitting for centers in the triplet ground state, S=1, undetected by photoluminescence (so called “dark”...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2018-08-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5037158 |
| _version_ | 1828767003258650624 |
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| author | A. N. Anisimov V. A. Soltamov I. D. Breev R. A. Babunts E. N. Mokhov G. V. Astakhov V. Dyakonov D. R. Yakovlev D. Suter P. G. Baranov |
| author_facet | A. N. Anisimov V. A. Soltamov I. D. Breev R. A. Babunts E. N. Mokhov G. V. Astakhov V. Dyakonov D. R. Yakovlev D. Suter P. G. Baranov |
| author_sort | A. N. Anisimov |
| collection | DOAJ |
| description | All-optical thermometry technique based on the energy level cross-relaxation in atomic-scale spin centers in SiC is demonstrated. This technique exploits a giant thermal shift of the zero-field splitting for centers in the triplet ground state, S=1, undetected by photoluminescence (so called “dark” centers) coupling to neighbouring spin-3/2 centers which can be optically polarized and read out (“bright” centers), and does not require radiofrequency fields. EPR was used to identify defects. The width of the cross-relaxation line is almost an order of magnitude smaller than the width of the excited state level-anticrossing line, which was used in all-optical thermometry and which can not be significantly reduced since determined by the lifetime of the excited state. With approximately the same temperature shift and the same signal intensities as for excited state level-anticrossing, cross-relaxation signal makes it possible to increase the sensitivity of the temperature measurement by more than an order of magnitude. Temperature sensitivity is estimated to be approximately 10 mK/Hz1/2 within a volume about 1 μ3, allocated by focused laser excitation in a scanning confocal microscope. Using cross-relaxation in the ground states of “bright” spin-3/2 centers and “dark” S=1 centers for temperature sensing and ground state level anti-crossing of “bright” spin-3/2 centers an integrated magnetic field and temperature sensor with submicron space resolution can be implemented using the same spin system. The coupling of individually addressable “bright” spin-3/2 centers connected by a chain of “dark” S=1 spins, could be considered in quantum information processing and multicenter entanglement under ambient conditions. |
| first_indexed | 2024-12-11T07:17:43Z |
| format | Article |
| id | doaj.art-257b574ce3fc405cb14ff95f9eb844d2 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-11T07:17:43Z |
| publishDate | 2018-08-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-257b574ce3fc405cb14ff95f9eb844d22022-12-22T01:16:11ZengAIP Publishing LLCAIP Advances2158-32262018-08-0188085304085304-610.1063/1.5037158117807ADVAll-optical quantum thermometry based on spin-level cross-relaxation and multicenter entanglement under ambient conditions in SiCA. N. Anisimov0V. A. Soltamov1I. D. Breev2R. A. Babunts3E. N. Mokhov4G. V. Astakhov5V. Dyakonov6D. R. Yakovlev7D. Suter8P. G. Baranov9Ioffe Institute, St Petersburg 194021, RussiaIoffe Institute, St Petersburg 194021, RussiaIoffe Institute, St Petersburg 194021, RussiaIoffe Institute, St Petersburg 194021, RussiaIoffe Institute, St Petersburg 194021, RussiaIoffe Institute, St Petersburg 194021, RussiaExperimental Physics VI, Julius-Maximilian University of Würzburg, 97074 Würzburg, GermanyIoffe Institute, St Petersburg 194021, RussiaExperimentelle Physik 3, Technische Universität Dortmund, D-44221 Dortmund, GermanyIoffe Institute, St Petersburg 194021, RussiaAll-optical thermometry technique based on the energy level cross-relaxation in atomic-scale spin centers in SiC is demonstrated. This technique exploits a giant thermal shift of the zero-field splitting for centers in the triplet ground state, S=1, undetected by photoluminescence (so called “dark” centers) coupling to neighbouring spin-3/2 centers which can be optically polarized and read out (“bright” centers), and does not require radiofrequency fields. EPR was used to identify defects. The width of the cross-relaxation line is almost an order of magnitude smaller than the width of the excited state level-anticrossing line, which was used in all-optical thermometry and which can not be significantly reduced since determined by the lifetime of the excited state. With approximately the same temperature shift and the same signal intensities as for excited state level-anticrossing, cross-relaxation signal makes it possible to increase the sensitivity of the temperature measurement by more than an order of magnitude. Temperature sensitivity is estimated to be approximately 10 mK/Hz1/2 within a volume about 1 μ3, allocated by focused laser excitation in a scanning confocal microscope. Using cross-relaxation in the ground states of “bright” spin-3/2 centers and “dark” S=1 centers for temperature sensing and ground state level anti-crossing of “bright” spin-3/2 centers an integrated magnetic field and temperature sensor with submicron space resolution can be implemented using the same spin system. The coupling of individually addressable “bright” spin-3/2 centers connected by a chain of “dark” S=1 spins, could be considered in quantum information processing and multicenter entanglement under ambient conditions.http://dx.doi.org/10.1063/1.5037158 |
| spellingShingle | A. N. Anisimov V. A. Soltamov I. D. Breev R. A. Babunts E. N. Mokhov G. V. Astakhov V. Dyakonov D. R. Yakovlev D. Suter P. G. Baranov All-optical quantum thermometry based on spin-level cross-relaxation and multicenter entanglement under ambient conditions in SiC AIP Advances |
| title | All-optical quantum thermometry based on spin-level cross-relaxation and multicenter entanglement under ambient conditions in SiC |
| title_full | All-optical quantum thermometry based on spin-level cross-relaxation and multicenter entanglement under ambient conditions in SiC |
| title_fullStr | All-optical quantum thermometry based on spin-level cross-relaxation and multicenter entanglement under ambient conditions in SiC |
| title_full_unstemmed | All-optical quantum thermometry based on spin-level cross-relaxation and multicenter entanglement under ambient conditions in SiC |
| title_short | All-optical quantum thermometry based on spin-level cross-relaxation and multicenter entanglement under ambient conditions in SiC |
| title_sort | all optical quantum thermometry based on spin level cross relaxation and multicenter entanglement under ambient conditions in sic |
| url | http://dx.doi.org/10.1063/1.5037158 |
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