Multiplexing Superconducting Qubit Circuit for Single Microwave Photon Generation

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2017-07-05
Major/Subject
Mcode
Degree programme
Language
en
Pages
16
1-16
Series
Journal of Low Temperature Physics
Abstract
We report on a device that integrates eight superconducting transmon qubits in λ/4 superconducting coplanar waveguide resonators fed from a common feedline. Using this multiplexing architecture, each resonator and qubit can be addressed individually, thus reducing the required hardware resources and allowing their individual characterisation by spectroscopic methods. The measured device parameters agree with the designed values, and the resonators and qubits exhibit excellent coherence properties and strong coupling, with the qubit relaxation rate dominated by the Purcell effect when brought in resonance with the resonator. Our analysis shows that the circuit is suitable for generation of single microwave photons on demand with an efficiency exceeding 80%.
Description
Keywords
Single photon generation, Superconducting qubit, Superconducting resonator, Transmon
Other note
Citation
George , R E , Senior , J , Saira , O P , Pekola , J P , de Graaf , S E , Lindström , T & Pashkin , Y A 2017 , ' Multiplexing Superconducting Qubit Circuit for Single Microwave Photon Generation ' , Journal of Low Temperature Physics , vol. 189 , no. 1-2 , pp. 60–75 . https://doi.org/10.1007/s10909-017-1787-x