An integrated magnetometry platform with stackable waveguide-assisted detection channels for sensing arrays.
Michael Hoese,Michael Koch,Vibhav Bharadwaj,Johannes Lang,J. P. Hadden,Reina Yoshizaki,Argyro N. Giakoumaki,Roberta Ramponi,Fedor Jelezko,Shane M. Eaton,Alexander Kubanek +10 more
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In this article, a femtosecond-laser-written type-II waveguide is used to detect magnetic resonance signals through the waveguide and perform first proof-of-principle experiments in magnetic field and temperature sensing.Abstract:
The negatively-charged NV$^-$-center in diamond has shown great success in nanoscale, high-sensitivity magnetometry. Efficient fluorescence detection is crucial for improving the sensitivity. Furthermore, integrated devices enable practicable sensors. Here, we present a novel architecture which allows us to create NV$^-$-centers a few nanometers below the diamond surface, and at the same time in the mode field maximum of femtosecond-laser-written type-II waveguides. We experimentally verify the coupling efficiency, showcase the detection of magnetic resonance signals through the waveguides and perform first proof-of-principle experiments in magnetic field and temperature sensing. The sensing task can be operated via the waveguide without direct light illumination through the sample, which marks an important step for magnetometry in biological systems which are fragile to light. In the future, our approach will enable the development of two-dimensional sensing arrays facilitating spatially and temporally correlated magnetometry.read more
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Journal Article
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Journal ArticleDOI
Super-Poissonian Light Statistics from Individual Silicon Vacancy Centers Coupled to a Laser-Written Diamond Waveguide
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TL;DR: In this paper , the authors combine excitation of single shallow-implanted silicon vacancy centers via high numerical aperture optics with detection assisted by laser-written type-II waveguides.
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Laser-written vapor cells for chip-scale atomic sensing and spectroscopy.
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Journal ArticleDOI
Nanoscale imaging magnetometry with diamond spins under ambient conditions
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TL;DR: This work shows how magneto-optical spin detection can be used to determine the location of a spin associated with a single nitrogen-vacancy centre in diamond with nanometre resolution under ambient conditions, and demonstrates the use of a single diamond spin as a scanning probe magnetometer to map nanoscale magnetic field variations.