Scalable registration of single quantum emitters within solid immersion lenses through femtosecond laser writing

Jones AR, Cheng X, Parthasarathy SK, Nagy R, Salter P, Smith J, Bonato C, Bekker C (2025)

Publication Status: Submitted

Publication Type: Unpublished / Preprint

Future Publication Type: Journal article

Publication year: 2025

Publisher: arXiv

DOI: 10.48550/arXiv.2502.15533

Abstract

Optically active silicon-vacancy (VSi) centers in silicon carbide (SiC) serve as qubits, interfacing spins via photons. This capability allows the encoding of photonic information within the spin state and facilitates on-demand readout, promising applications such as quantum memories. However, electron irradiation, a common technique for creating defects in SiC, lacks spatial selectivity, limiting scalability. We employed femtosecond laser writing within photonic structures to generate single (VSi) centers, registering them to photonic structures and enhancing optical collection efficiency by a factor of 4.5. Characterization of 28 laser-written defects centers in solid immersion lenses (SILs) showed distributions relative to the photonic structure's center of 260 nm in the x-direction and 60 nm in the y-direction, with standard deviations of ±170 nm and ±90 nm, respectively. This method is scalable for developing integrated quantum devices using spin-photon interfaces in SiC.

Authors with CRIS profile

Shravan Kumar Parthasarathy Lehrstuhl für Angewandte Quantentechnologien Roland Nagy Lehrstuhl für Angewandte Quantentechnologien

Additional Organisation(s)

FAU Profilzentrum Licht.Materie.Quantentechnologien (FAU LMQ)

Involved external institutions

Heriot-Watt University GB United Kingdom (GB) University of Oxford GB United Kingdom (GB)

How to cite

APA:

Jones, A.R., Cheng, X., Parthasarathy, S.K., Nagy, R., Salter, P., Smith, J.,... Bekker, C. (2025). Scalable registration of single quantum emitters within solid immersion lenses through femtosecond laser writing. (Unpublished, Submitted).

MLA:

Jones, Alexander R., et al. Scalable registration of single quantum emitters within solid immersion lenses through femtosecond laser writing. Unpublished, Submitted. 2025.

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