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Fu, X. (author), Riesebos, L. (author), Rol, M.A. (author), van Straten, J. (author), van Someren, J. (author), Khammassi, N. (author), Ashraf, I. (author), Vermeulen, R.F.L. (author), Newsum, V. (author), Loh, K.K.L. (author), de Sterke, J.C. (author), Vlothuizen, W.J. (author), Schouten, R.N. (author), Almudever, C.G. (author), Dicarlo, L. (author), Bertels, K. (author)A widely-used quantum programming paradigm comprises of both the data flow and control flow. Existing quantum hardware cannot well support the control flow, significantly limiting the range of quantum software executable on the hardware. By analyzing the constraints in the control microarchitecture, we found that existing quantum assembly...conference paper 2019
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Fu, X. (author), Rol, M.A. (author), Bultink, C.C. (author), van Someren, J. (author), Khammassi, N. (author), Ashraf, I. (author), Vermeulen, R.F.L. (author), de Sterke, J.C. (author), Vlothuizen, W.J. (author), Schouten, R.N. (author), Almudéver, C.G. (author), DiCarlo, L. (author), Bertels, K. (author)This article proposes a quantum microarchitecture, QuMA. Flexible programmability of a quantum processor is achieved by multilevel instructions decoding, abstracting analog control into digital control, and translating instruction execution with non-deterministic timing into event trigger with precise timing. QuMA is validated by several single...article 2018
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Fu, X. (author), Rol, M.A. (author), Bultink, C.C. (author), van Someren, J. (author), Khammassi, N. (author), Ashraf, I. (author), Vermeulen, R.F.L. (author), De Sterke, J.C. (author), Vlothuizen, W.J. (author), Schouten, R.N. (author), Almudever, C.G. (author), DiCarlo, L. (author), Bertels, K. (author)Quantum computers promise to solve certain problems that are intractable for classical computers, such as factoring large numbers and simulating quantum systems. To date, research in quantum computer engineering has focused primarily at opposite ends of the required system stack: devising high-level programming languages and compilers to...conference paper 2017
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Versluis, R. (author), Poletto, S. (author), Khammassi, N. (author), Tarasinski, B. (author), Haider, N. (author), Michalak, D.J. (author), Bruno, A. (author), Bertels, K. (author), DiCarlo, L. (author)We present a scalable scheme for executing the error-correction cycle of a monolithic surface-code fabric composed of fast-flux-tunable transmon qubits with nearest-neighbor coupling. An eight-qubit unit cell forms the basis for repeating both the quantum hardware and coherent control, enabling spatial multiplexing. This control uses three fixed...article 2017
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Versluis, R. (author), Poletto, S. (author), Khammassi, N. (author), Haider, N. (author), Michalak, D.J. (author), Bruno, A. (author), Bertels, K. (author), DiCarlo, L. (author)We present a scalable scheme for executing the error-correction cycle of a monolithic surface-code fabric composed of fast-flux-tuneable transmon qubits with nearest-neighbor coupling. An eight-qubit unit cell forms the basis for repeating both the quantum hardware and coherent control, enabling spatial multiplexing. This control uses three...article 2016