Quantum light–matter interfaces are at the heart of photonic quantum technologies. Quantum memories for photons, where non-classical states of photons are mapped onto stationary matter states and preserved for subsequent retrieval, are technical realizations enabled by exquisite control over interactions between light and matter. The ability of quantum memories to synchronize probabilistic events makes them a key component in quantum repeaters and quantum computation based on linear optics. This critical feature has motivated many groups to dedicate theoretical and experimental research to develop quantum memory devices. In recent years, exciting new applications, and more advanced developments of quantum memories, have proliferated. In this review, we outline some of the emerging applications of quantum memories in optical signal processing, quantum computation and non-linear optics. We review recent experimental and theoretical developments, and their impacts on more advanced photonic quantum technologies based on quantum memories.

中文翻译：

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量子存储器：新兴应用和最新进展

量子光-物质界面是光子量子技术的核心。光子的量子记忆是将光子的非经典状态映射到静止物质状态并保存下来以供后续检索，这是通过对光与物质之间相互作用的精确控制而实现的技术实现。量子存储器同步概率事件的能力使其成为量子中继器和基于线性光学的量子计算的关键组成部分。这一关键特征促使许多团体致力于理论和实验研究来开发量子存储设备。近年来，量子存储器令人兴奋的新应用和更先进的发展不断涌现。在这篇综述中，我们概述了量子存储器在光信号处理、量子计算和非线性光学中的一些新兴应用。我们回顾了最近的实验和理论发展，以及它们对基于量子存储器的更先进的光子量子技术的影响。