2014/12/27 by Wei-Cheng Kong, Guang-Wei Deng, Shu-Xiao Li +4 · 12 citations
Engineering · Physics and Astronomy · #Equipotential #Line (geometry) #Microwave #Microwave cavity #Near-Field Optical Microscopy #Q factor #Quantum and electron transport phenomena #SIGNAL (programming language) #Semiconductor Quantum Structures and Devices #Superconductivity #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.4913252
published in Review of Scientific Instruments 86(2), 023108 (American Institute of Physics)
arxiv created 2014/12/27 · openalex publication_date 2015/02/01 · arxiv updated 2015/06/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report a technique that can noninvasively add multiple DC wires into a 3D superconducting microwave cavity for electronic devices that require DC electrical terminals. We studied the influence of our DC lines on the cavity performance systematically. We found that the quality factor of the cavity is reduced if any of the components of the electrical wires cross the cavity equipotential planes. Using this technique, we were able to incorporate a quantum dot (QD) device into a 3D cavity. We then controlled and measured the QD transport signal using the DC lines. We have also studied the heating effects of the QD by the microwave photons in the cavity.