Sub-10 nm precision engineering of solid-state defects via nanoscale aperture array mask

Abstract

Engineering a strongly interacting uniform qubit cluster would be a major step towards realizing a scalable quantum system for quantum sensing, and a node-based qubit register. For a solid-state system that uses a defect as a qubit, various methods to precisely position defects have been developed, yet the large-scale fabrication of qubits within the strong coupling regime at room temperature continues to be a challenge. In this work, we generate nitrogen vacancy (NV) color centers in diamond with sub-10 nm scale precision by using a combination of nanoscale aperture arrays (NAAs) with a high aspect ratio of 10 and a secondary E-beam hole pattern used as an ion-blocking mask. We perform optical and spin measurements on a small cluster of NV spins and statistically investigate the effect of the NAAs during an ion-implantation process. We discuss how this technique is effective for constructing a scalable system.

18 pages, 5 figures

References in corpus (5)

• Realization of a multi-node quantum network of remote solid-state qubits
• Scalable quantum register based on coupled electron spins in a room temperature solid
• Nanoimplantation and Purcell enhancement of single NV centers in photonic crystal cavities in diamond
• Highly-tunable formation of nitrogen-vacancy centers via ion implantation
• Efficient creation of dipolar coupled nitrogen-vacancy spin qubits in diamond