摘要
Optical microcavities have widely been employed to enhance either the optical excitation or the photon emission processes for boosting light-matter interactions at the nanoscale.When both the excitation and emission processes are simultaneously facilitated by the optical resonances provided by the microcavities,as referred to the dual-resonance condition in this article,the performances of many nanophotonic devices approach to the optima.In this work,we present versatile accessing of dual-resonance conditions in deterministically coupled quantum-dot(QD)-micropillars,which enables emission from neutral exciton(X)—charged exciton(CX)transition with improved single-photon purity.In addition,the rarely observed up-converted single-photon emission process is achieved under dual-resonance conditions.We further exploit the vectorial nature of the high-order cavity modes to significantly improve the excitation efficiency under the dual-resonance condition.The dual-resonance enhanced light-matter interactions in the quantum regime provide a viable path for developing integrated quantum photonic devices based on cavity quantum electrodynamics(QED)effect,e.g.,highly efficient quantum light sources and quantum logical gates.
基金
This research was supported by the National Key R&D Program of China(2018YFA0306100)
Key-Area Research and Development Program of Guangdong Province(2018B030329001)
Science and Technology Program of Guangzhou(202103030001)
the National Natural Science Foundation of China(11874437,62035017)
the national super-computer center in Guangzhou,the National Natural Science Foundation of China(12074442,91836303)
the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program(2017BT01X121).
