利用宏观原子系综进行光量子比特的存储与读出
量子物理
2016-09-08 v2
摘要
我们提出了一种实验上可行的协议，利用光与物质之间成熟的 Faraday 相互作用，在原子量子存储器中完整存储并读出任意光态。我们的协议依赖于单个光脉冲多次通过原子系综，而无需在两次通过之间使用不切实际的数公里长延迟线。此外，我们引入了随时间变化的交互强度，从而能够存储和读出具有任意脉冲形状的态。如针对光子量子比特的显式计算所示，保真度在无需压缩或纠缠初态的情况下按指数趋近于 1。
引用
@article{arxiv.quant-ph/0505170,
title = {Light Qubit Storage and Retrieval using Macroscopic Atomic Ensembles},
author = {J. Sherson and A. S. Soerensen and J. Fiurasek and K. Moelmer and E. Polzik},
journal= {arXiv preprint arXiv:quant-ph/0505170},
year = {2016}
}
备注
4 pages, 3 figures For his new version, the original paper has substantially rewritten to make it clearer including completely new introduction and conclusions and a rearrangement of the middle part. A minor mistake in the numerical results has been found and corrected, which resulted in higher values for the fidelities