All-optical nanoscale thermometry with silicon-vacancy centers in diamond

2018/05/14 by Christian T. Nguyen, Ruffin E. Evans, Alp Sipahigil +7 · 1 voice · 1 citation
Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #Advanced Fiber Laser Technologies #Diamond and Carbon-based Materials Research #High-pressure geophysics and materials

paper · doi:10.1063/1.5029904

openalex created_date 2017/06/15 · openalex publication_date 2018/05/14 · openalex updated_date 2026/07/30

Abstract

We demonstrate an all-optical thermometer based on an ensemble of silicon-vacancy centers (SiVs) in diamond by utilizing the sensitivity of the zero-phonon line wavelength to temperature, Δλ/ΔT=0.0124(2) nm K–1 [6.8(1) GHz K–1]. Using SiVs in bulk diamond, we achieve 70 mK precision at room temperature with a temperature uncertainty σT=360 mK/Hz. Finally, we use SiVs in 200 nm nanodiamonds as local temperature probes with 521 mK/Hz uncertainty and achieve sub-Kelvin precision. These properties deviate by less than 1% between nanodiamonds, enabling calibration-free thermometry for sensing and control of complex nanoscale systems.

Citations

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Discussions

• @Whit3rd's answer mentions "Presumably a modern equivalent might look at fluorescence lifetimes of some tiny particles, with similar microscopic visual access, in laser illumination." This is not hypo [stackexchange, 7 points]

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