Tm3+:YAlO3中激发态自旋哈密顿量与电信波段光钟跃迁的光学表征
Optical characterization of excited-state spin Hamiltonians and clock transitions at telecommunication wavelength in Tm3+:YAlO3
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中文总结 AI 辅助
本研究通过光谱烧孔技术表征Tm3+:YAlO3中激发态自旋哈密顿量，并预测特定磁场下的光学钟跃迁，以改善电信波段光学相干时间，助力单光子源和量子存储器应用。
中文摘要 AI 辅助
三价铥离子在钇铝钙钛矿（Tm3+:YAlO3）中两个激发态流形3F4和3H4之间的零声子线（ZPL）位于约1451 nm的电信E波段，并在低温下表现出几微秒的光学相干时间。为了在潜在应用（如单光子源和光学量子存储器）的背景下改善这一时间，我们表征了这两个流形最低斯塔克能级的磁性质。通过改变外部磁场幅度和方向，我们利用光谱烧孔产生的边孔，测量了由场依赖的频率失谐引起的增强核塞曼分裂，并表征了由二次塞曼相互作用引起的不均匀线移。综合这些结果，我们建立了3F4和3H4流形最低斯塔克能级的自旋哈密顿量，并预测了特定磁场方向和幅度下的光学钟跃迁。
英文摘要
The zero-phonon line (ZPL) between the two excited-state manifolds 3F4 and 3H4 of the trivalent thulium ion in yttrium aluminum perovskite (Tm3+:YAlO3) lies within the telecom E-band at around 1451 nm and exhibits an optical coherence time of a few μs at cryogenic temperatures. To improve this time in view of potential applications, e.g. single-photon sources and optical quantum memory, we characterized the magnetic properties of the lowest Stark levels of these two manifolds. Varying the external magnetic field amplitude and orientation, we measured the enhanced nuclear Zeeman splitting by probing the field-dependent frequency detuning of side holes created by means of spectral hole burning, and we characterized the inhomogeneous line shift caused by the quadratic Zeeman interaction. Together, this allowed us to establish the spin Hamiltonians for the lowest Stark level of the 3F4 and 3H4 manifolds, and to predict optical clock transitions for particular orientations and magnitudes of the magnetic field
发表机构
- Department of Applied Physics, University of Geneva（日内瓦大学应用物理系）
- PSI Center for Photon Science, Paul Scherrer Institute（保罗谢尔研究所光子科学中心）
- Laboratory for Solid State Physics and Quantum Center, ETH Zurich（苏黎世联邦理工学院固体物理与量子中心）
- Institute of Physics, EPF Lausanne（洛桑联邦理工学院物理研究所）
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