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Hendrickx, N.W. (author), Franke, D.P. (author), Sammak, A. (author), Scappucci, G. (author), Veldhorst, M. (author)The promise of quantum computation with quantum dots has stimulated widespread research. Still, a platform that can combine excellent control with fast and high-fidelity operation is absent. Here, we show single and two-qubit operations based on holes in germanium. A high degree of control over the tunnel coupling and detuning is obtained by...conference paper 2019
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Hendrickx, N.W. (author), Lawrie, W.I.L. (author), Petit, L. (author), Sammak, A. (author), Scappucci, G. (author), Veldhorst, M. (author)Qubits based on quantum dots have excellent prospects for scalable quantum technology due to their inherent compatibility with standard semiconductor manufacturing. While early on it was recognized that holes may offer a multitude of favourable properties for fast and scalable quantum control, research thus far has remained almost exclusively...conference paper 2019
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Porret, C. (author), Hikavyya, A. (author), Gomez Granados, J.F. (author), Baudot, S. (author), Vohra, S. (author), Kunert, B. (author), Douhard, B. (author), Bogdanowicz, J. (author), Schaekers, M. (author), Kohen, D. (author), Margetis, J. (author), Tolle, J. (author), Lima, L.P.B. (author), Sammak, A. (author), Scappucci, G. (author), Rosseel, E. (author), Langer, R. (author), Loo, R. (author)As CMOS scaling proceeds with sub-10 nm nodes, new architectures and materials are implemented to continue increasing performances at constant footprint. Strained and stacked channels and 3D-integrated devices have for instance been introduced for this purpose. A common requirement for these new technologies is a strict limitation in thermal...article 2018
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Hendrickx, N.W. (author), Franke, D.P. (author), Sammak, A. (author), Kouwenhoven, M. (author), Sabbagh, D. (author), Yeoh, L. (author), Li, R. (author), Tagliaferri, M.L.V. (author), Virgilio, M. (author), Capellini, G. (author), Scappucci, G. (author), Veldhorst, M. (author)Superconductors and semiconductors are crucial platforms in the field of quantum computing. They can be combined to hybrids, bringing together physical properties that enable the discovery of new emergent phenomena and provide novel strategies for quantum control. The involved semiconductor materials, however, suffer from disorder, hyperfine...article 2018
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Samkharadze, N. (author), Zheng, G. (author), Kalhor, N. (author), Brousse, D. (author), Sammak, A. (author), Mendes, U.C. (author), Blais, A. (author), Scappucci, G. (author), Vandersypen, L.M.K. (author)Long coherence times of single spins in silicon quantum dots make these systems highly attractive for quantum computation, but how to scale up spin qubit systems remains an open question. As a first step to address this issue, we demonstrate the strong coupling of a single electron spin and a single microwave photon. The electron spin is trapped...article 2018