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arXiv 1409.1256quant-phcond-mat.mes-hall
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一维波导中双光子在量子发射体上的散射:精确动力学和诱导关联

Scattering of two photons on a quantum emitter in a one-dimensional waveguide: Exact dynamics and induced correlations

Anders Nysteen, Philip Trøst Kristensen, Dara P. S. McCutcheon, Per Kaer, Jesper Mørk

摘要:

我们发展了一种波函数方法来描述嵌入在一维波导中的量子发射器上的两个光子的散射。我们的方法使我们能够计算整个系统在任何时候的精确动态,以及发射器的传输特性。我们表明,相对于传入的光子的发射器的非线性强烈地依赖于发射器的激发和传入的脉冲的光谱形状,导致在传输的光子,这取决于它们的分离和宽度至关重要。此外,对反向传播的脉冲,我们分析了诱导的量子相关的散射状态下的水平,我们表明,作为一个非线性分束器的光子脉冲的光谱宽度时,发射器的行为是相似的衰减率。

英文摘要:

We develop a wavefunction approach to describe the scattering of two photons on a quantum emitter embedded in a one-dimensional waveguide. Our method allows us to calculate the exact dynamics of the complete system at all times, as well as the transmission properties of the emitter. We show that the non-linearity of the emitter with respect to incoming photons depends strongly on the emitter excitation and the spectral shape of the incoming pulses, resulting in transmission of the photons which depends crucially on their separation and width. In addition, for counter-propagating pulses, we analyze the induced level of quantum correlations in the scattered state, and we show that the emitter behaves as a non-linear beam-splitter when the spectral width of the photon pulses is similar to the emitter decay rate.

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