Print Email Facebook Twitter Multiplexed quantum transport using commercial off-the-shelf CMOS at sub-kelvin temperatures Title Multiplexed quantum transport using commercial off-the-shelf CMOS at sub-kelvin temperatures Author Paquelet Wuetz, B. (TU Delft QCD/Scappucci Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Bavdaz, P.L. (TU Delft QCD/Scappucci Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Yeoh, L.A. (TU Delft QCD/Scappucci Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Schouten, R.N. (TU Delft ALG/General; TU Delft QuTech Advanced Research Centre) van der Does, C.H. (TU Delft QuTech Advanced Research Centre; TU Delft EMSD EEMCS Project engineers) Tiggelman, M.J. (TU Delft ALG/General; TU Delft QuTech Advanced Research Centre) Sabbagh, D. (TU Delft QCD/Scappucci Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Sammak, A. (TU Delft Business Development; TNO) Almudever, Carmen G. (TU Delft Computer Engineering; TU Delft QuTech Advanced Research Centre) Sebastiano, F. (TU Delft (OLD)Applied Quantum Architectures; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Clarke, J. S. (Components Research) Veldhorst, M. (TU Delft QCD/Veldhorst Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Scappucci, G. (TU Delft QCD/Scappucci Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Department Business Development Date 2020 Abstract Continuing advancements in quantum information processing have caused a paradigm shift from research mainly focused on testing the reality of quantum mechanics to engineering qubit devices with numbers required for practical quantum computation. One of the major challenges in scaling toward large-scale solid-state systems is the limited input/output (I/O) connectors present in cryostats operating at sub-kelvin temperatures required to execute quantum logic with high fidelity. This interconnect bottleneck is equally present in the device fabrication-measurement cycle, which requires high-throughput and cryogenic characterization to develop quantum processors. Here we multiplex quantum transport of two-dimensional electron gases at sub-kelvin temperatures. We use commercial off-the-shelf CMOS multiplexers to achieve an order of magnitude increase in the number of wires. Exploiting this technology, we accelerate the development of 300 mm epitaxial wafers manufactured in an industrial CMOS fab and report a remarkable electron mobility of (3.9 ± 0.6) × 105 cm2/Vs and percolation density of (6.9 ± 0.4) × 1010 cm−2, representing a key step toward large silicon qubit arrays. We envision that the demonstration will inspire the development of cryogenic electronics for quantum information, and because of the simplicity of assembly and versatility, we foresee widespread use of similar cryo-CMOS circuits for high-throughput quantum measurements and control of quantum engineered systems. To reference this document use: http://resolver.tudelft.nl/uuid:6d1f342a-b5de-459e-8b15-06fdb43c250a DOI https://doi.org/10.1038/s41534-020-0274-4 ISSN 2056-6387 Source NPJ Quantum Information, 6 (1) Part of collection Institutional Repository Document type journal article Rights © 2020 B. Paquelet Wuetz, P.L. Bavdaz, L.A. Yeoh, R.N. Schouten, C.H. van der Does, M.J. Tiggelman, D. Sabbagh, A. Sammak, Carmen G. Almudever, F. Sebastiano, J. S. Clarke, M. Veldhorst, G. Scappucci Files PDF s41534_020_0274_4.pdf 1.87 MB Close viewer /islandora/object/uuid:6d1f342a-b5de-459e-8b15-06fdb43c250a/datastream/OBJ/view