On-Demand Microwave Generator of Shaped Single Photons

作     者：P. Forn-Díaz C. W. Warren C. W. S. Chang A. M. Vadiraj C. M. Wilson 

作者机构：Institute for Quantum Computing and Department of Electrical and Computer Engineering University of Waterloo 200 University Avenue West Waterloo N2L 3G1 Canada Escola Tècnica Superior d’Enginyeria Industrial de Barcelona Universitat Politècnica de Catalunya Barcelona 08034 Spain Barcelona Supercomputing Center (BSC) Carrer de Jordi Girona 29 08034 Barcelona Spain 

出 版 物：《Physical Review Applied》 (Phys. Rev. Appl.)

年 卷 期：2017年第8卷第5期

页      面：054015-054015页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：NSERC of Canada Canada Foundation for Innovation, CFI Beatriu de Pinós Ontario Ministry of Research, Innovation and Science, MRIS Industry Canada 

主　　题：Josephson effect Quantum communication Quantum gates Quantum information with solid state qubits Quantum networks Single photon sources Superconducting quantum optics Microwave techniques 

摘      要：We demonstrate the full functionality of a circuit that generates single microwave photons on demand, with a wave packet that can be modulated with a near-arbitrary shape. We achieve such a high tunability by coupling a superconducting qubit near the end of a semi-infinite transmission line. A dc superconducting quantum interference device shunts the line to ground and is employed to modify the spatial dependence of the electromagnetic mode structure in the transmission line. This control allows us to couple and decouple the qubit from the line, shaping its emission rate on fast time scales. Our decoupling scheme is applicable to all types of superconducting qubits and other solid-state systems and can be generalized to multiple qubits as well as to resonators.