Photoionisation detection of a single Er^(3+) ion with sub-100-ns time resolution  

作　　者：Yangbo Zhang Wenda Fan Jiliang Yang Hao Guan Qi Zhang Xi Qin Changkui Duan Gabriele G.de Boo Brett C.Johnson Jeffrey C.McCallum Matthew J.Sellars Sven Rogge Chunming Yin Jiangfeng Du 

机构地区：[1]CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences,University of Scienceand Technology of China,Hefei 230026,China [2]CAS Center for Excellence in Quantum Information and Quantum Physics,University of Scienceand Technology of China,Hefei 230026,China [3]Hefei National Laboratory,Universityof Science and Technology of China,Hefei 230088,China [4]Centre of Excellencefor Quantum Computation and Communication Technology,School of Physics,University of New South Wales,NSW 2052,Australia [5]Centre of Excellence for Quantum Computation and CommunicationTechnology,School of Engineering,RMIT University,Victoria3001,Australia [6]Centre of Excellence for Quantum Computation and Communication Technology,School of Physics,University of Melbourne,Victoria3010,Australia [7]Centre of Excellencefor Quantum Computation and Communication Technology,ResearchSchool of Physics and Engineering,Australian National University,ACT 0200,Australia

出　　处：《National Science Review》2024年第4期32-39,共8页国家科学评论（英文版）

基　　金：This work was supported by Ministry of Science and Technology of the People's Republic of China through the National Key R&D Program of China(2018YFA0306600);Department of Science and Technology of Anhui Province through Anhui Initiative in Quantum Information Technologies(AHY050000);Anhui Provincial Natural Science Foundation(2108085MA15).

摘　　要：Efficient detection of single optical centres in solids is essential for quantum information processing, sensing and single-photon generation applications.In this work,we use radio-frequency(RF) reflectometry to electrically detect the photoionisation induced by a single Er^(3+) ion in Si.The high bandwidth and sensitivity of the RF reflectometry provide sub-100-ns time resolution for the photoionisation detection.With this technique,the optically excited state lifetime of a single Er^(3+) ion in a Si nano-transistor is measured for the first time to be 0.49±0.04μs.Our results demonstrate an efficient approach for detecting a charge state change induced by Er excitation and relaxation.This approach could be used for fast readout of other single optical centres in solids and is attractive for large-scale integrated optical quantum systems thanks to the multi-channel RF reflectometry demonstrated with frequency multiplexing techniques.

关 键 词：single optical centres erbium ions RF reflectometry photoionisation detection 

分 类 号：O46[理学—电子物理学]