arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1902.04306quant-phcond-mat.mes-hall
收藏

量子发射体与局域表面等离子体激元的量子化耦合特征

Signatures of quantized coupling between quantum emitters and localized surface plasmons

Chun-Jie Yang, Jun-Hong An, Hai-Qing Lin

摘要:

量子等离子体将光限制在衍射极限之外的尺度上,为探索强光-物质耦合提供了理想的平台。金属-介质界面上的光致局域表面等离子体激元(LSP)作为量子总线在量子信息处理中具有广泛的应用前景,但金属中光的损耗特性阻碍了其应用。在这里,我们提出了一种机制,使可逆的能量交换和多体量子相关的集体量子发射体(QE)介导的LSP持久。通过研究球形金属纳米粒子支撑的量子阱与LSP之间的量子化相互作用,我们发现量子阱与LSP之间的量子化耦合在稳态下的不同特征,包括完全衰变、布居捕获和持续振荡,本质上是由量子阱与LSP系统能谱中形成的不同数量的束缚态所决定的.丰富了我们对有耗介质中光-物质相互作用的理解,我们的结果对利用等离子体纳米结构设计量子器件具有指导意义。

英文摘要:

Confining light to scales beyond the diffraction limit, quantum plasmonics supplies an ideal platform to explore strong light-matter couplings. The light-induced localized surface plasmons (LSPs) on the metal-dielectric interface acting as a quantum bus have wide potential in quantum information processing; however, the loss nature of light in the metal hinders their application. Here we propose a mechanism to make the reversible energy exchange and the multipartite quantum correlation of a collective of quantum emitters (QEs) mediated by the LSPs persistent. Via investigating the quantized interaction between the QEs and the LSPs supported by a spherical metal nanoparticle, we find that the diverse signatures of the quantized QE-LSP coupling in the steady state, including the complete decay, population trapping, and persistent oscillation, are essentially determined by the different number of bound states formed in the energy spectrum of the QE-LSP system. Enriching our understanding on the light-matter interactions in a lossy medium, our result is instructive in the design of quantum devices using plasmonic nanostructures.

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。

↑