Stark tuning of telecom single-photon emitters based on a single Er\(^{3+}\)

• Published in: arXiv.org
• Main Authors: Jian-Yin, Huang, Peng-Jun, Liang, Zheng, Liang, Pei-Yun, Li, You-Zhi, Ma, Duan-Chen, Liu, Zong-Quan Zhou, Chuan-Feng, Li, Guo, Guang-Can
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 27.06.2023
• Subjects: Emission; Emitters; Erbium; Photonic crystals; Photons; Physics - Quantum Physics; Rare earth elements; Solid state; Telecommunications; Tuning; Yttrium
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2305.01216

The implementation of scalable quantum networks requires photons at the telecom band and long-lived spin coherence. The single Er\(^{3+}\) in solid-state hosts is an important candidate that fulfills these critical requirements simultaneously. However, to entangle distant Er\(^{3+}\) ions through photonic connections, the emission frequency of individual Er\(^{3+}\) in solid-state matrix must be the same, which is challenging because the emission frequency of Er\(^{3+}\) depends on its local environment. Herein, we propose and experimentally demonstrate the Stark tuning of the emission frequency of a single Er\(^{3+}\) in a Y\(_2\)SiO\(_5\) crystal by employing electrodes interfaced with a silicon photonic crystal cavity. We obtain a Stark shift of 182.9 \(\pm\) 0.8 MHz which is approximately 27 times of the optical emission linewidth, demonstrating the promising applications in tuning the emission frequency of independent Er\(^{3+}\) into the same spectral channels. Our results provide a useful solution for construction of scalable quantum networks based on single Er\(^{3+}\) and a universal tool for tuning emission of individual rare-earth ions.