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Optical determination of vacuum Rabi splitting in a semiconductor quantum dot induced by a metal nanoparticle

机译：金属纳米粒子在半导体量子点中真空Rabi分裂的光学测定

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摘要

We propose a theoretical scheme to determine the vacuum Rabi splitting in a single semiconductor quantum dot (SQD) induced by a metal nanoparticle (MNP). Based on cavity quantum electrodynamics, the exciton-plasmon interaction between the SQD and the MNP is considered while a strong pump laser and a weak probe laser are simultaneously presented. By decreasing the distance between them, we can increase the coupling strength. At resonance, thanks to the strong coupling, a vacuum Rabi splitting can be observed clearly in the probe absorption spectrum. The coupling strength can be obtained by measuring the vacuum Rabi splitting. This strong coupling is significant for the investigation of surface-plasmon-based quantum information processing.
机译：我们提出了一种确定金属纳米粒子（MNP）诱导的单个半导体量子点（SQD）中真空Rabi分裂的理论方案。基于腔量子电动力学，考虑了SQD和MNP之间的激子-等离子体激元相互作用，同时提出了强泵浦激光器和弱探针激光器。通过减小它们之间的距离，我们可以提高耦合强度。在共振时，由于强耦合，可以在探针吸收光谱中清楚地观察到真空Rabi分裂。可以通过测量真空拉比劈裂来获得耦合强度。这种强耦合对于基于表面等离激元的量子信息处理的研究具有重要意义。

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