Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Jespersen, T S"'
Publikováno v:
Phys. Rev. B 99, 035422 (2019)
We systematically study the coupling of longitudinal modes (shells) in a carbon nanotube quantum dot. Inelastic cotunneling spectroscopy is used to probe the excitation spectrum in parallel, perpendicular and rotating magnetic fields. The data is com
Externí odkaz:
http://arxiv.org/abs/1809.07143
Autor:
Luthi, F., Stavenga, T., Enzing, O. W., Bruno, A., Dickel, C., Langford, N. K., Rol, M. A., Jespersen, T. S., Nygard, J., Krogstrup, P., DiCarlo, L.
Publikováno v:
Phys. Rev. Lett. 120, 100502 (2018)
We present an experimental study of nanowire transmons at zero and applied in-plane magnetic field. With Josephson non-linearities provided by the nanowires, our qubits operate at higher magnetic fields than standard transmons. Nanowire transmons exh
Externí odkaz:
http://arxiv.org/abs/1711.07961
Autor:
Albrecht, S. M., Hansen, E. B., Higginbotham, A. P., Kuemmeth, F., Jespersen, T. S., Nygård, J., Krogstrup, P., Danon, J., Flensberg, K., Marcus, C. M.
Publikováno v:
Phys. Rev. Lett. 118, 137701 (2017)
We investigate effects of quasiparticle poisoning in a Majorana island with strong tunnel coupling to normal-metal leads. In addition to the main Coulomb blockade diamonds, "shadow" diamonds appear, shifted by 1e in gate voltage, consistent with tran
Externí odkaz:
http://arxiv.org/abs/1612.05748
Akademický článek
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Autor:
Albrecht, S. M., Higginbotham, A. P., Madsen, M., Kuemmeth, F., Jespersen, T. S., Nygård, J., Krogstrup, P., Marcus, C. M.
Publikováno v:
Nature 531, 206 (2016)
Majorana zero modes are quasiparticle excitations in condensed matter systems that have been proposed as building blocks of fault-tolerant quantum computers [1]. They are expected to exhibit non-Abelian particle statistics, in contrast to the usual s
Externí odkaz:
http://arxiv.org/abs/1603.03217
Publikováno v:
Appl. Phys. Lett. 107, 243101 (2015)
The thermal gradient along indium-arsenide nanowires was engineered by a combination of fabricated micro- trenches in the supporting substrate and focused laser irradiation. This allowed local control of thermally activated oxidation reactions of the
Externí odkaz:
http://arxiv.org/abs/1601.06583
Autor:
Chen, Y. Z., Trier, F., Wijnands, T., Green, R. J., Gauquelin, N., Egoavil, R., Christensen, D. V., Koster, G., Huijben, M., Bovet, N., Macke, S., He, F., Sutarto, R., Andersen, N. H., Prawiroatmodjo, G. E. D. K., Jespersen, T. S., Sulpizio, J. A., Honig, M., Linderoth, S., Ilani, S., Verbeeck, J., Van Tendeloo, G., Rijnders, G., Sawatzky, G. A., Pryds, N.
The discovery of two-dimensional electron gases (2DEGs) at the interface between two insulating complex oxides, such as LaAlO3 (LAO) or gamma-Al2O3 (GAO) epitaxially grown on SrTiO3 (STO) 1,2, provides an opportunity for developing all-oxide electron
Externí odkaz:
http://arxiv.org/abs/1504.05986
Autor:
Larsen, T. W., Petersson, K. D., Kuemmeth, F., Jespersen, T. S., Krogstrup, P., Nygard, J., Marcus, C. M.
Publikováno v:
Phys. Rev. Lett. 115, 127001 (2015)
We introduce a hybrid qubit based on a semiconductor nanowire with an epitaxially grown superconductor layer. Josephson energy of the transmon-like device ("gatemon") is controlled by an electrostatic gate that depletes carriers in a semiconducting w
Externí odkaz:
http://arxiv.org/abs/1503.08339
Autor:
Higginbotham, A. P., Albrecht, S. M., Kirsanskas, G., Chang, W., Kuemmeth, F., Krogstrup, P., Jespersen, T. S., Nygard, J., Flensberg, K., Marcus, C. M.
Publikováno v:
Nature Physics 11, 1017 (2015)
Quasiparticle excitations can compromise the performance of superconducting devices, causing high frequency dissipation, decoherence in Josephson qubits, and braiding errors in proposed Majorana-based topological quantum computers. Quasiparticle dyna
Externí odkaz:
http://arxiv.org/abs/1501.05155
Autor:
Chang, W., Albrecht, S. M., Jespersen, T. S., Kuemmeth, F., Krogstrup, P., Nygård, J., Marcus, C. M.
Publikováno v:
Nature Nanotechnology 10, 232 (2015)
Many present and future applications of superconductivity would benefit from electrostatic control of carrier density and tunneling rates, the hallmark of semiconductor devices. One particularly exciting application is the realization of topological
Externí odkaz:
http://arxiv.org/abs/1411.6255