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Mazur, G.P. (author), van Loo, N. (author), Wang, J.Y. (author), Dvir, T. (author), Wang, G. (author), Khindanov, A. (author), Korneychuk, S. (author), Borsoi, F. (author), Dekker, R.C. (author), Badawy, G. (author), Vinke, P. (author), Gazibegovic, S. (author), Bakkers, E.P.A.M. (author), Quintero-Pérez, M. (author), Heedt, S. (author), Kouwenhoven, L.P. (author)In superconducting quantum circuits, aluminum is one of the most widely used materials. It is currently also the superconductor of choice for the development of topological qubits. However, aluminum-based devices suffer from poor magnetic field compatibility. Herein, this limitation is resolved by showing that adatoms of heavy elements (e.g.,...article 2022
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Kroll, J.G. (author), Borsoi, F. (author), van der Enden, K.L. (author), Uilhoorn, W. (author), de Jong, D. (author), Quintero-Perez, M. (author), van Woerkom, D.J. (author), Bruno, A. (author), Plissard, S.R. (author), Car, D. (author), Bakkers, E.P.A.M. (author), Cassidy, M.C. (author), Kouwenhoven, L.P. (author)Superconducting coplanar-waveguide resonators that can operate in strong magnetic fields are important tools for a variety of high-frequency superconducting devices. Magnetic fields degrade resonator performance by creating Abrikosov vortices that cause resistive losses and frequency fluctuations or suppress the superconductivity entirely. To...article 2019
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Gül, O. (author), Zhang, H. (author), de Vries, F.K. (author), van Veen, J. (author), Zuo, K. (author), Mourik, V. (author), Conesa-Boj, S. (author), Nowak, M.P. (author), van Woerkom, D.J. (author), Quintero Pérez, M. (author), Cassidy, M.C. (author), Geresdi, A. (author), Koelling, S. (author), Car, D. (author), Plissard, S.R. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, L.P. (author)Topological superconductivity is a state of matter that can host Majorana modes, the building blocks of a topological quantum computer. Many experimental platforms predicted to show such a topological state rely on proximity-induced superconductivity. However, accessing the topological properties requires an induced hard superconducting gap,...article 2017
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Zhang, H. (author), Gül, Ö. (author), Conesa-Boj, S. (author), Nowak, M.P. (author), Wimmer, M. (author), Zuo, K. (author), Mourik, V. (author), de Vries, F.K. (author), van Veen, J. (author), de Moor, M.W.A. (author), Bommer, J.D.S. (author), van Woerkom, D.J. (author), Car, D. (author), Plissard, S.R. (author), Bakkers, E.P.A.M. (author), Quintero Pérez, M. (author), Cassidy, M.C. (author), Koelling, S. (author), Goswami, S. (author), Watanabe, K. (author), Taniguchi, T. (author), Kouwenhoven, L.P. (author)Semiconductor nanowires have opened new research avenues in quantum transport owing to their confined geometry and electrostatic tunability. They have offered an exceptional testbed for superconductivity, leading to the realization of hybrid systems combining the macroscopic quantum properties of superconductors with the possibility to control...article 2017
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Cheng, C. (author), van der Poel, A.P.P. (author), Jansen, P. (author), Quintero Pérez, M. (author), Wall, T.E. (author), Ubachs, W. (author), Bethlem, H.L. (author)The resolution of any spectroscopic or interferometric experiment is ultimately limited by the total time a particle is interrogated. Here we demonstrate the first molecular fountain, a development which permits hitherto unattainably long interrogation times with molecules. In our experiments, ammonia molecules are decelerated and cooled using...article 2016