Generation of Pure-State Single-Photon Wavepackets by Conditional Preparation Based on Spontaneous Parametric Downconversion
Generation of Pure-State Single-Photon Wavepackets by Conditional Preparation Based on Spontaneous Parametric Downconversion
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发表时间：
2006-11
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通讯作者：
A. U’Ren;C. Silberhorn;R. Erdmann;K. Banaszek;W. Grice;I. Walmsley;M. Raymer
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作者：
A. U’Ren;C. Silberhorn;R. Erdmann;K. Banaszek;W. Grice;I. Walmsley;M. Raymer
我们研究了基于参数下转换的单光子的条件制备，其中从给定对中检测到一个光子预示着共轭模式中存在一个单光子。我们推导出光子对的模式特性的条件，这确保了有条件制备的单光子是量子力学纯的。我们提出了具体的实验技术，产生的光子对非常适合单光子条件准备。
We study the conditional preparation of single photons based on parametric downconversion, where the detection of one photon from a given pair heralds the existence of a single photon in the conjugate mode. We derive conditions on the modal characteristics of the photon pairs, which ensure that the conditionally prepared single photons are quantum-mechanically pure. We propose specific experimental techniques that yield photon pairs ideally suited for single-photon conditional preparation.