High-fidelity teleportation between light and atoms
High-fidelity teleportation between light and atoms
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DOI：
10.1103/physreva.74.064301
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发表时间：
2006-08
影响因子：
2.9
通讯作者：
K. Hammerer;E. Polzik;J. Cirac
中科院分区：
文献类型：
--
作者：
K. Hammerer;E. Polzik;J. Cirac
我们展示了如何在与最近的实验中使用的相同的设置中实现光到原子的高保真度量子隐形传态[J. Sherson et.al.，quant-ph/0605095，被Nature接受]，其中首次证明了这种物种间量子态转移。我们的改进方案利用了原子态和散射光丰富的多模纠缠结构，并需要简单的零差检测信号和压缩光的后处理，以便在现实的实验条件下实现高达90%（85%）的相干（量子比特）态的隐形传态。剩下的限制是由于原子退相干和光损失。
We show how high fidelity quantum teleportation of light to atoms can be achieved in the same setup as was used in the recent experiment [J. Sherson et.al., quant-ph/0605095, accepted by Nature], where such an inter-species quantum state transfer was demonstrated for the first time. Our improved protocol takes advantage of the rich multimode entangled structure of the state of atoms and scattered light and requires simple post-processing of homodyne detection signals and squeezed light in order to achieve fidelities up to 90% (85%) for teleportation of coherent (qubit) states under realistic experimental conditions. The remaining limitation is due to atomic decoherence and light losses.