Laser-written waveguide-integrated coherent spins in diamond

Guo, Yanzhao, Hadden, John P. ORCID: https://orcid.org/0000-0001-5407-6754, Gorini, Frederico, Coccia, Giulio, Bharadwaj, Vibhav, Kavatamane, Vinaya Kumar, Alam, Mohammad Sahnawaz, Ramponi, Roberta, Barclay, Paul E., Chiappini, Andrea, Ferrari, Maurizio, Kubanek, Alexander, Bifone, Angelo, Eaton, Shane M. and Bennett, Anthony J. ORCID: https://orcid.org/0000-0002-5386-3710 2024. Laser-written waveguide-integrated coherent spins in diamond. APL Photonics 9 (7) , 076103. 10.1063/5.0209294

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Abstract

Quantum emitters, such as the negatively charged nitrogen-vacancy center in diamond, are attractive for quantum technologies, such as nano-sensing, quantum information processing, and as a non-classical light source. However, it is still challenging to position individual emitters in photonic structures while preserving the spin coherence properties of the defect. In this paper, we investigate single and ensemble waveguide-integrated nitrogen-vacancy centers in diamond fabricated by femtosecond laser writing followed by thermal annealing. Their spin coherence properties are systematically investigated and are shown to be comparable to native nitrogen-vacancy centers in diamond. This method paves the way for the fabrication of coherent spins integrated within photonic devices.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	American Institute of Physics
ISSN:	2378-0967
Funders:	EPSRC
Date of First Compliant Deposit:	17 June 2024
Date of Acceptance:	11 June 2024
Last Modified:	09 Jul 2024 09:59
URI:	https://orca.cardiff.ac.uk/id/eprint/169865

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