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arXiv · 2206.15239

Photonic indistinguishability of the tin-vacancy center in nanostructured diamond

Jesús Arjona Martínez·Ryan A. Parker·Kevin C. Chen·Carola M. Purser·Linsen Li·Cathryn P. Michaels·Alexander M. Stramma·Romain Debroux·Isaac B. Harris·Martin Hayhurst Appel·Eleanor C. Nichols·Matthew E. Trusheim·Dorian A. Gangloff·Dirk Englund·Mete Atatüre
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Abstract

Tin-vacancy centers in diamond are promising spin-photon interfaces owing to their high quantum-efficiency, large Debye-Waller factor, and compatibility with photonic nanostructuring. Benchmarking their single-photon indistinguishability is a key challenge for future applications. Here, we report the generation of single photons with $99.7^{+0.3}_{-2.5}\%$ purity and $63(9)\%$ indistinguishability from a resonantly excited tin-vacancy center in a single-mode waveguide. We obtain quantum control of the optical transition with $1.71(1)$-ns-long $\pi$-pulses of $77.1(8)\%$ fidelity. A modest Purcell enhancement factor of 12 would enhance the indistinguishability to $95$\%. The greater than $100$ ms spectral stability shown would then enable strings of up to $10^6$ identical photons to be generated.

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Jesús Arjona Martínez, Ryan A. Parker, Kevin C. Chen, Carola M. Purser, Linsen Li, Cathryn P. Michaels, Alexander M. Stramma, Romain Debroux, Isaac B. Harris, Martin Hayhurst Appel, Eleanor C. Nichols, Matthew E. Trusheim, Dorian A. Gangloff, Dirk Englund, Mete Atatüre. 2022-06-30. Photonic indistinguishability of the tin-vacancy center in nanostructured diamond. https://arxiv.org/abs/2206.15239

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