Efficient and long-lived interfaces between light and matter are crucial for the development of quantum information technologies. Integrated photonic solutions for quantum storage devices offer improved performances due to light confinement and enable more complex and scalable designs. We demonstrate a novel platform for quantum light storage based on laser written waveguides. The new adopted writing regime allows us to attain waveguides with improved confining capabilities compared to previous demonstrations. We report the first demonstration of single-photon storage in laser written waveguides. While we achieve storage efficiencies comparable to those observed in massive samples, the power involved for the memory preparation is strongly reduced, by a factor 100, due to an enhancement of the light–matter interaction of almost one order of magnitude. Moreover, we demonstrate excited-state storage times 100 times longer than previous realizations with single photons in integrated quantum memories. Our system promises to effectively fulfill the requirements for efficient and scalable integrated quantum storage devices.

中文翻译：

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激光编写的集成平台，用于存储先驱单光子的量子

光与物质之间的有效且长寿命的界面对于量子信息技术的发展至关重要。量子存储设备的集成光子解决方案由于光的限制而提供了改进的性能，并实现了更复杂和可扩展的设计。我们展示了一种基于激光写入波导的新型量子光存储平台。与以前的演示相比，新采用的写入方式使我们能够获得具有改进约束能力的波导。我们报告了激光写入波导中单光子存储的首次演示。尽管我们实现了与大量样本中观察到的存储效率相当的存储效率，但存储准备工作所涉及的功耗却大大降低了100倍，由于光物质相互作用提高了近一个数量级。此外，我们证明了集成态量子存储器中单个光子的激发态存储时间比以前的实现要长100倍。我们的系统有望有效满足高效，可扩展的集成量子存储设备的要求。