摘要
In this work,we achieve high count-rate single-photon output in single-mode(SM)optical fiber.Epitaxial and dilute InAs/GaAs quantum dots(QDs)are embedded in a GaAs/AlGaAs distributed Bragg reflector(DBR)with a micro-pillar cavity,so as to improve their light emission extraction in the vertical direction,thereby enhancing the optical SM fiber’s collection capabil-ity(numerical aperture:0.13).By tuning the temperature precisely to make the quantum dot exciton emission resonant to the micro-pillar cavity mode(Q~1800),we achieve a fiber-output single-photon count rate as high as 4.73×10^(6) counts per second,with the second-order auto-correlation g2(0)remaining at 0.08.
基金
supported by the Key-Area Research and Development Program of Guangdong Province(Grant No.2018B030329001)
the National Key Technologies R&D Program of China(2018YFA0306101)
The Scientific Instrument Developing Project of the Chinese Academy of Science(YJKYYQ20170032)
the National Natural Science Foundation of China(61505196)
the Program of Beijing Academy of Quantum Information Sciences(Grant No.Y18G01).
