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Low-Charge-Noise Nitrogen-Vacancy Centers in Diamond Created Using Laser Writing with a Solid-Immersion Lens

Yurgens, Viktoria and Zuber, Josh A. and Flagan, Sigurd and De Luca, Marta and Shields, Brendan J. and Zardo, Ilaria and Maletinsky, Patrick and Warburton, Richard J. and Jakubczyk, Tomasz. (2021) Low-Charge-Noise Nitrogen-Vacancy Centers in Diamond Created Using Laser Writing with a Solid-Immersion Lens. ACS Photonics, 8 (6). pp. 1726-1734.

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Abstract

We report on pulsed-laser-induced generation of nitrogen-vacancy (NV) centers in diamond facilitated by a solid-immersion lens (SIL). The SIL enables laser writing at energies as low as 5.8 nJ per pulse and allows vacancies to be formed close to a diamond surface without inducing surface graphitization. We operate in the previously unexplored regime, where lattice vacancies are created following tunneling breakdown rather than multiphoton ionization. We present three samples in which NV center arrays were laser-written at distances between similar to 1 and 40 mu m from a diamond surface, all presenting narrow distributions of optical linewidths with means between 62.1 and 74.5 MHz. The linewidths include the effect of long-term spectral diffusion induced by a 532 nm repump laser for charge-state stabilization, thereby emphasizing the particularly low-charge-noise environment of the created color centers. Such high-quality NV centers are excellent candidates for practical applications employing two-photon quantum interference with separate NV centers. Finally, we propose a model for disentangling power broadening from inhomogeneous broadening in the NV center optical linewidth.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimental Material Physics (Zardo)
05 Faculty of Science > Departement Physik > Physik > Experimental Physics (Warburton)
05 Faculty of Science > Departement Physik > Physik > Georg H. Endress-Stiftungsprofessur für Experimentalphysik (Maletinsky)
UniBasel Contributors:Warburton, Richard J and Maletinsky, Patrick M. and Zardo, Ilaria
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
ISSN:2330-4022
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
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Last Modified:02 Mar 2022 15:55
Deposited On:02 Mar 2022 15:55

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