Single-atom single-photon quantum interface
Single-atom single-photon quantum interface
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DOI：
10.1126/science.1143835
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发表时间：
2007-07-27
期刊：
影响因子：
56.9
通讯作者：
Rempe, Gerhard
中科院分区：
文献类型：
--
作者：
Wilk, Tatjana;Webster, Simon C.;Rempe, Gerhard
可扩展量子计算架构的一个主要挑战是信息从一个节点到另一个节点的忠实传输。我们报道了一种基于光腔的原子-光子量子接口的实现，利用它将单个原子与单个光子纠缠，然后将原子的量子态映射到第二个单光子上。后一步使原子从光中解脱出来，产生纠缠的光子对。我们的方案本质上是确定性的，并建立了实现分布式量子网络所需的基本元素，其中单个原子作为量子存储器，单个飞行光子作为量子信使。
A major challenge for a scalable quantum computing architecture is the faithful transfer of information from one node to another. We report on the realization of an atom-photon quantum interface based on an optical cavity, using it to entangle a single atom with a single photon and then to map the quantum state of the atom onto a second single photon. The latter step disentangles the atom from the light and produces an entangled photon pair. Our scheme is intrinsically deterministic and establishes the basic element required to realize a distributed quantum network with individual atoms at rest as quantum memories and single flying photons as quantum messengers.