Zobrazeno 1 - 10
of 130
pro vyhledávání: '"Van Heck, B."'
Publikováno v:
Phys. Rev. B 110, 045404 (2024)
Fluxons in a superconducting loop can be coherently coupled by quantum phase slips occurring at a weak link such as a Josephson junction. If Cooper pair tunneling at the junction occurs through a resonant level, $2\pi$ quantum phase slips are suppres
Externí odkaz:
http://arxiv.org/abs/2310.03102
Autor:
Wesdorp, J. J., Matute-Caňadas, F. J., Vaartjes, A., Grünhaupt, L., Laeven, T., Roelofs, S., Splitthoff, L. J., Pita-Vidal, M., Bargerbos, A., van Woerkom, D. J., Krogstrup, P., Kouwenhoven, L. P., Andersen, C. K., Yeyati, A. Levy, van Heck, B., de Lange, G.
Publikováno v:
Phys. Rev. B 109, 045302 (2024)
Andreev bound states are fermionic states localized in weak links between superconductors which can be occupied with spinful quasiparticles. Microwave experiments using superconducting circuits with InAs/Al nanowire Josephson junctions have recently
Externí odkaz:
http://arxiv.org/abs/2208.11198
Autor:
Wesdorp, J. J., Grünhaupt, L., Vaartjes, A., Pita-Vidal, M., Bargerbos, A., Splitthoff, L. J., Krogstrup, P., van Heck, B., de Lange, G.
Publikováno v:
Phys. Rev. Lett. 131, 117001 (2023)
Josephson junctions in InAs nanowires proximitized with an Al shell can host gate-tunable Andreev bound states. Depending on the bound state occupation, the fermion parity of the junction can be even or odd. Coherent control of Andreev bound states h
Externí odkaz:
http://arxiv.org/abs/2112.01936
Autor:
Shen, J., Winkler, G. W., Borsoi, F., Heedt, S., Levajac, V., Wang, J. Y., van Driel, D., Bouman, D., Gazibegovic, S., Veld, R. L. M. Op Het, Car, D., Logan, J. A., Pendharkar, M., Palmstrom, C. J., Bakkers, E. P. A. M., Kouwenhoven, L. P., van Heck, B.
Publikováno v:
Phys. Rev. B 104, 045422 (2021)
We measure the charge periodicity of Coulomb blockade conductance oscillations of a hybrid InSb-Al island as a function of gate voltage and parallel magnetic field. The periodicity changes from $2e$ to $1e$ at a gate-dependent value of the magnetic f
Externí odkaz:
http://arxiv.org/abs/2012.10118
Autor:
Kringhøj, A., Winkler, G. W., Larsen, T. W., Sabonis, D., Erlandsson, O., Krogstrup, P., van Heck, B., Petersson, K. D., Marcus, C. M.
Publikováno v:
Phys. Rev. Lett. 126, 047701 (2021)
We investigate transmon qubits made from semiconductor nanowires with a fully surrounding superconducting shell. In the regime of reentrant superconductivity associated with the destructive Little-Parks effect, numerous coherent transitions are obser
Externí odkaz:
http://arxiv.org/abs/2008.10013
Autor:
Vaitiekėnas, S., Winkler, G. W., van Heck, B., Karzig, T., Deng, M. -T., Flensberg, K., Glazman, L. I., Nayak, C., Krogstrup, P., Lutchyn, R. M., Marcus, C. M.
Publikováno v:
Science 367, eaav3392 (2020)
We present a novel route to realizing topological superconductivity using magnetic flux applied to a full superconducting shell surrounding a semiconducting nanowire core. In the destructive Little-Parks regime, reentrant regions of superconductivity
Externí odkaz:
http://arxiv.org/abs/2003.13177
Autor:
Kringhøj, A., van Heck, B., Larsen, T. W., Erlandsson, O., Sabonis, D., Krogstrup, P., Casparis, L., Petersson, K. D., Marcus, C. M.
Publikováno v:
Phys. Rev. Lett. 124, 246803 (2020)
We demonstrate strong suppression of charge dispersion in a semiconductor-based transmon qubit across Josephson resonances associated with a quantum dot in the junction. On resonance, dispersion is drastically reduced compared to conventional transmo
Externí odkaz:
http://arxiv.org/abs/1911.10011
Autor:
Kringhøj, A., Larsen, T. W., van Heck, B., Sabonis, D., Erlandsson, O., Petkovic, I., Pikulin, D. I., Krogstrup, P., Petersson, K. D., Marcus, C. M.
Publikováno v:
Phys. Rev. Lett. 124, 056801 (2020)
Creating a transmon qubit using semiconductor-superconductor hybrid materials not only provides electrostatic control of the qubit frequency, it also allows parts of the circuit to be electrically connected and disconnected in situ by operating a sem
Externí odkaz:
http://arxiv.org/abs/1910.08200
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Publikováno v:
Phys. Rev. Lett. 119, 116802 (2017)
Motivated by recent experiments with proximitized nanowires, we study a mesoscopic s-wave superconductor connected via point contacts to normal-state leads. We demonstrate that at energies below the charging energy the system is described by the two-
Externí odkaz:
http://arxiv.org/abs/1706.04726