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arXiv 1701.04060quant-ph
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与原子强耦合的波导输运

Waveguide transport mediated by strong coupling with atoms

Mu-Tian Cheng, Jingping Xu, Girish S. Agarwal

摘要:

研究了偶极-偶极相互作用(DDI)下一维波导与量子发射链耦合的单光子散射特性。光子输运对倏逝耦合发射体的位置极其敏感。利用实空间哈密顿量推导了含两个辐射源的链在DDI作用下反射和透射振幅的解析表达式。两种情况下,其中两个发射器对称和非对称耦合到波导,进行了详细讨论。结果表明,由于DDI的存在,反射和透射典型光谱分裂为两个峰。光谱中的Fano最小值也可用于估计DDI的强度。此外,DDI使光谱强烈不对称,并在零透射的区域中创建透射窗口。文中还给出了由多个辐射源组成的链的散射谱。我们的关键发现是,DDI可以扩大高反射的频带宽度时,链由许多发射器。

英文摘要:

We investigate single photon scattering properties in one-dimensional waveguide coupled to quantum emitter's chain with dipole-dipole interaction (DDI). The photon transport is extremely sensitive to the location of the evanescently coupled emitters. The analytical expressions of reflection and transmission amplitudes for the chain containing two emitters with DDI are deduced by using real-space Hamiltonian. Two cases, where the two emitters symmetrically and asymmetrically couple to the waveguide, are discussed in detail. It shows that the reflection and transmission typical spectra split into two peaks due to the DDI. The Fano minimum in the spectra can also be used to estimate the strength of the DDI. Furthermore, the DDI makes spectra strongly asymmetric and create a transmission window in the region where there was zero transmission. The scattering spectra for the chain consisting of multi-emitters are also given. Our key finding is that DDI can broaden the frequency band width for high reflection when the chain consists of many emitters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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