Erlangen 2018 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 51: Poster: Quantum Optics and Photonics IV

Q 51.45: Poster

Mittwoch, 7. März 2018, 16:15–18:15, Redoutensaal

Ion Implantation and Annealing Parameters and their Effect on Spin Properties of Color Centers in Diamond — •Johannes Lang, Ragul Sivakumar, Christian Osterkamp, Boris Naydenov, and Fedor Jelezko — Institute for Quantum Optics, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany

The color center in diamond formed by a substitutional nitrogen and an adjacent vacancy (NV center) is amongst the most studied defects in diamond. It is a promising candidate for different applications such as e.g. qubit spin registers in future quantum computation [1] or for different sensing applications [2] as well as quantum communication. Besides the on-demand creation of these color centers by shallow ¹⁵N⁺ implantation [3], increasing their creation yield and coherence time T₂ are key factors for the applications mentioned above [4]. Here, we present optimizations on our home built, low energy, UHV ion implanter as well as the UHV annealing oven, in combination allowing the creation of single, shallow (< 10 nm) color centers with well controllable properties regarding their implantation depth, density and position. We also present recent investigations on the effect of varying the annealing process parameters and their influence on the created NV centers.

[1] M. W. Doherty et al., Physics Reports 528 1-45 (2013)

[2] C. Müller et al., Nat. Comm. 5 4703 (2014)

[3] S. Pezzagna et al., New J. Phys. 12 065017 (2010)

[4] FF de Oliveira et al., Nat. Comm. 8 15409 (2017)