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arXiv 2307.03022physics.opticsphysics.atom-phquant-ph
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光学磁偶极跃迁的强 Purcell 增强

Strong Purcell enhancement of an optical magnetic dipole transition

Sebastian P. Horvath, Christopher M. Phenicie, Salim Ourari, Mehmet T. Uysal, Songtao Chen, Łukasz Dusanowski, Mouktik Raha, Paul Stevenson, Adam T. Turflinger,… 展开作者

Sebastian P. Horvath, Christopher M. Phenicie, Salim Ourari, Mehmet T. Uysal, Songtao Chen, Łukasz Dusanowski, Mouktik Raha, Paul Stevenson, Adam T. Turflinger, Robert J. Cava, Nathalie P. de Leon, Jeff D. Thompson

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AI总结：

本文通过在 MgO 中耦合单个 Er$^{3+}$ 离子与纳米光子腔，实验演示了光学磁 Purcell 效应，测得磁 Purcell 因子 $P_m=1040 \pm 30$，并实现了磁偶极自旋-光子界面。

摘要：

利用纳米光子结构工程化局域态密度是通过 Purcell 效应控制光与物质相互作用的强大工具。在光学频率下，通常利用对电场态密度的控制来耦合和操控电偶极跃迁。然而，也可以通过工程化磁态密度来控制磁偶极跃迁。在这项工作中，我们实验演示了光学磁 Purcell 效应，使用单个稀土离子耦合到纳米光子腔。我们工程化了一种新的单光子发射体，即 MgO 中的 Er$^{3+}$，其中电偶极衰减率被立方格位对称性强烈抑制，从而产生几乎纯的磁偶极光学跃迁。这使得能够明确测定磁 Purcell 因子 $P_m=1040 \pm 30$。我们进一步扩展该技术，实现了磁偶极自旋-光子界面，对单个 Er$^{3+}$ 电子自旋进行光学自旋初始化和读出。这项工作证明了电场与磁场态密度工程在本质上的等价性，并为更广泛类别的发射体控制光与物质相互作用提供了一种新工具。

英文摘要：

Engineering the local density of states with nanophotonic structures is a powerful tool to control light-matter interactions via the Purcell effect. At optical frequencies, control over the electric field density of states is typically used to couple to and manipulate electric dipole transitions. However, it is also possible to engineer the magnetic density of states to control magnetic dipole transitions. In this work, we experimentally demonstrate the optical magnetic Purcell effect using a single rare earth ion coupled to a nanophotonic cavity. We engineer a new single photon emitter, Er$^{3+}$ in MgO, where the electric dipole decay rate is strongly suppressed by the cubic site symmetry, giving rise to a nearly pure magnetic dipole optical transition. This allows the unambiguous determination of a magnetic Purcell factor $P_m=1040 \pm 30$. We further extend this technique to realize a magnetic dipole spin-photon interface, performing optical spin initialization and readout of a single Er$^{3+}$ electron spin. This work demonstrates the fundamental equivalence of electric and magnetic density of states engineering, and provides a new tool for controlling light-matter interactions for a broader class of emitters.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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