Ming-Bo Chen(陈明博)1,2, Bao-Chuan Wang(王保传)1,2, Si-Si Gu(顾思思)1,2, Ting Lin(林霆)1,2, Hai-Ou Li(李海欧)1,2, Gang Cao(曹刚)1,2,†, and Guo-Ping Guo(郭国平)1,2,3,‡
1 Key Laboratory of Quantum Information, CAS, University of Science and Technology of China, Hefei 230026, China; 2 CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China; 3 Origin Quantum Computing Company Limited, Hefei 230026, China
Abstract Coherent photon source is an important element that has been widely used in spectroscopy, imaging, detection, and teleportation in quantum optics. However, it is still a challenge to realize micro-scale coherent emitters in semiconductor systems. We report the observation of gain in a cavity-coupled GaAs double quantum dot system with a voltage bias across the device. By characterizing and analyzing the cavity responses to different quantum dot behaviors, we distinguish the microwave photon emission from the signal gain. This study provides a possibility to realize micro-scale amplifiers or coherent microwave photon sources in circuit quantum electrodynamics (cQED) hybrid systems.
(Resonators, cavities, amplifiers, arrays, and rings)
Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0301700), the National Natural Science Foundation of China (Grant Nos. 61922074, 11674300, 61674132, 11625419, and 11804327), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB24030601), and the Anhui Initiative in Quantum Information Technologies, China (Grant No. AHY080000).
Ming-Bo Chen(陈明博), Bao-Chuan Wang(王保传), Si-Si Gu(顾思思), Ting Lin(林霆), Hai-Ou Li(李海欧), Gang Cao(曹刚), and Guo-Ping Guo(郭国平) Micro-scale photon source in a hybrid cQED system 2021 Chin. Phys. B 30 048507
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.