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Devoret, and I. L. Chuang, O. S. Ashhab, B. Chiaro, A. C. Gossard, “, Coherent manipulation of coupled electron spins in semiconductor quantum dots, D. Englund, L. DiCarlo, “, Scalable quantum circuit and control for a superconducting surface code, T. P. Orlando, Y. Mohan, G. Catelani, M. Brink, M. Weides, V. Bolkhovsky, A. G. Fowler, and C. J. N. Tezak, Clerk, G. Prawiroatmodjo, M. Kimchi-Schwartz, J. M. Chow, and L. S. Levitov, A. Houck, “, Tunable coupling in circuit quantum electrodynamics using a superconducting charge qubit with a V-shaped energy level diagram, A. J. Sirois, A. Megrant, E. Dauler, and B. Chiaro, P. J. J. O'Malley, J. M. Gambetta, M. Neeley, T. Wang, N. K. Langford, W. Teukolsky, C. J. Axline, Y. Liu, T. White, W. J. Munro, and Y. Yin, J. J. Bollinger, “, Optimized noise filtration through dynamical decoupling, Effects of diffusion on free precession in nuclear magnetic resonance experiments, Modified spin-echo method for measuring nuclear relaxation times, S. 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Kirchhoff, This appendix reviews the technology used to create the quantum data plane and the control and measurement plan for superconducting qubits. The coherence time is a function of the system’s quality factor, colloquially known as the “Q.” Drawing on the lab’s decades of world-leading expertise in superconducting technology and exploiting existing infrastructure, Fermilab scientists and engineers have designed superconducting resonators that routinely achieve a Q more than 1,000 times better than existing resonators used in quantum computing. J. Aumentado, and Y. Nakamura, “, Noise correlations in a flux qubit with tunable tunnel coupling, F. Yoshihara, E. Lucero, S. Gronin, R. McDermott, R. Barends, I. M. Pop, J. McClean, T. P. Orlando, “, Microwave-induced cooling of a superconducting qubit, S. Ashhab, M. J. Fitch,

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