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Abstract
Quantum computers (QC) have the potential to efficiently solve problems currently unfeasible on even the fastest generation of classical computers. The building block of a QC is a quantum bit (qubit). Encoding and reading qubit states coupled via high-Q resonant cavity modes is a solution to maintaining qubit states; however there is a need for simple, scalable and robust fabrication techniques capable of realizing high density cavity arrays. RadiaBeam is developing a novel approach utilizing metal additive manufacturing(AM) using both laser and electron beam powder bed fusion. Using a 6GHz quarter wave resonator (QWR), we fabricated several niobium and titanium alloy QWR cavities and characterized their superconducting RF performance. In this letter, we provide the details of the first 3D-printed qubit cavities design and fabrication, and compare their Q-factors, measured at dilution fridge temperatures, against the machined Nb resonators.
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Details
1 RadiaBeam Technologies LLC , Santa Monica, CA, 90404 , USA
2 Institute for Molecular Engineering, University of Chicago , Chicago, IL, 60637 , USA
3 Institute for Molecular Engineering, University of Chicago , Chicago, IL, 60637 , USA; Argonne National Laboratory , Lemont, IL, 60439 , USA
4 North Carolina State University , Raleigh, NC 27607 , USA
5 Argonne National Laboratory , Lemont, IL, 60439 , USA