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TY - CONF AU - Kutsaev, S.V. AU - Agustsson, R.B. AU - Carriere, P.R. AU - Cleland, A.N. AU - Conway, Z.A. AU - Dumur, É. AU - Moro, A. AU - Smirnov, A.Yu. AU - Taletski, K.V. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - Quarter-wave Resonator with the Optimized Shape for Quantum Information Systems J2 - Proc. of SRF2019, Dresden, Germany, 30 June-05 July 2019 CY - Dresden, Germany T2 - International Conference on RF Superconductivity T3 - 19 LA - english AB - Quantum computers (QC), if realized, could disrupt many computationally intense fields of science. The building block element of a QC is a quantum bit (qubit). Qubits enable the use of quantum superposition and multi-state entanglement in QC calculations, allowing a QC to simultaneously calculate millions of computations at once. However, quantum states stored in a qubit degrade with decreased quality factors and interactions with the environment. One technical solution to improve qubit lifetimes and network interactions is a circuit comprised of a Josephson junction located inside of a high Q-factor superconducting 3D cavity. RadiaBeam, in collaboration with Argonne National Laboratory and The University of Chicago, has developed a superconducting radio-frequency quarter-wave resonant cavity (QWR) for quantum computation. Here a 6 GHz QWR was optimized to include tapering of the inner and outer conductors, a toroidal shape for the resonator shorting plane, and the inner conductor to reduce parasitic capacitance. In this paper, we present the results of the qubit cavity design optimization, fabrication, processing and testing in a single-photon regime at mK temperatures. PB - JACoW Publishing CP - Geneva, Switzerland SP - 430 EP - 433 KW - cavity KW - niobium KW - photon KW - shielding KW - factory DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-TUP016 UR - http://jacow.org/srf2019/papers/tup016.pdf ER -