Dual-path methods for propagating quantum microwaves
Dual-path methods for propagating quantum microwaves
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DOI：
10.1088/1367-2630/16/1/015001
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发表时间：
2014-01-02
影响因子：
3.3
通讯作者：
Solano, E.
中科院分区：
文献类型：
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作者：
Di Candia, R.;Menzel, E. P.;Solano, E.
我们通过双路径方法研究传播量子微波的量子态断层扫描、纠缠检测和通道噪声重建。所提出的方案利用了以下关键元件：传播通道、分束器、线性放大器和场正交检测器。值得注意的是，我们的方法能够容忍相位不敏感微波放大器添加到信号中的普遍存在的噪声。此外，我们用数值例子和实验数据分析了我们的技术，并将它们与 Eichler 等人基于单一路径开发的方案（2011 Phys. Rev. Lett. 106 220503；2011 Phys. Rev. Lett. 107 113601）进行了比较。我们的方法提供了关键的工具箱组件，可以为量子微波隐形传态和通信协议铺平道路。
We study quantum state tomography, entanglement detection and channel noise reconstruction of propagating quantum microwaves via dual-path methods. The presented schemes make use of the following key elements: propagation channels, beam splitters, linear amplifiers and field quadrature detectors. Remarkably, our methods are tolerant to the ubiquitous noise added to the signals by phase-insensitive microwave amplifiers. Furthermore, we analyse our techniques with numerical examples and experimental data, and compare them with the scheme developed in Eichler et al (2011 Phys. Rev. Lett. 106 220503; 2011 Phys. Rev. Lett. 107 113601), based on a single path. Our methods provide key toolbox components that may pave the way towards quantum microwave teleportation and communication protocols.