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Q: Fachverband Quantenoptik und Photonik

Q 62: Poster – Quantum Information Technologies (joint session Q/QI)

Q 62.29: Poster

Donnerstag, 13. März 2025, 17:00–19:00, Tent

Tin-vacancy centers in photonic crystal cavities in diamond — •Daniel Bedialauneta Rodriguez, Tim Turan, Nina Codreanu, and Ronald Hanson — Delft University of Technology

Color centers in diamond are a promising platform for realizing quantum networks as a spin-photon interface that also gives access to naturally occurring 13C memory qubits. The nitrogen-vacancy (NV) center has been successfully used to realize a three-node quantum network. However, its low emission rate of coherent photons and sensitivity to surface charges makes scaling to more nodes difficult.

The tin-vacancy (SnV) center has emerged as a compelling alternative due to its favorable optical properties and compatibility with nanophotonic structures. Here, we present the integration of SnV centers into photonic crystal cavities. These cavities promise to enhance the light-matter interaction, ultimately boosting the rate of entanglement between nodes. We measure cavity properties at cryogenic temperatures and demonstrate in-situ frequency tuning through gas desorption. We use this technique to probe the cavity-SnV system.

Keywords: photonic crystal cavity; diamond; tin vacancy center; nanophotonic; light matter interaction