Zobrazeno 1 - 10
of 432
pro vyhledávání: '"Flensberg, K."'
Autor:
Vaitiekėnas, S., Souto, R. Seoane, Liu, Y., Krogstrup, P., Flensberg, K., Leijnse, M., Marcus, C. M.
Publikováno v:
Phys. Rev. B 105, L041304 (2022)
We report Coulomb blockade transport studies of semiconducting InAs nanowires grown with epitaxial superconducting Al and ferromagnetic insulator EuS on overlapping facets. Comparing experiment to a theoretical model, we associate cotunneling feature
Externí odkaz:
http://arxiv.org/abs/2104.01463
Publikováno v:
Phys. Rev. B 103, 104508 (2021)
Hybrid superconductor-semiconductor heterostructures are promising platforms for realizing topological superconductors and exploring Majorana bound states physics. Motivated by recent experimental progress, we theoretically study how magnetic insulat
Externí odkaz:
http://arxiv.org/abs/2011.06547
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
Publikováno v:
Phys. Rev. B 101, 081407 (2020)
In this article we analyze the efficiency of operations based on transferring charge from a quantum dot (QD) to two coupled topological superconductors, which can be used for performing nonabelian operations on Majorana bound states (MBSs). We develo
Externí odkaz:
http://arxiv.org/abs/1910.08420
Autor:
Schulenborg, J., Flensberg, K.
Publikováno v:
Phys. Rev. B 101, 014512 (2020)
Experimental techniques to verify Majoranas are of current interest. A prominent test is the effect of Majoranas on the Josephson current between two wires linked via a normal junction. Here, we study the case of a quantum dot connecting the two supe
Externí odkaz:
http://arxiv.org/abs/1910.04106
Autor:
Ménard, G. C., Anselmetti, G. L. R., Martinez, E. A., Puglia, D., Malinowski, F. K., Lee, J. S., Choi, S., Pendharkar, M., Palmstrøm, C. J., Flensberg, K., Marcus, C. M., Casparis, L., Higginbotham, A. P.
Publikováno v:
Phys. Rev. Lett. 124, 036802 (2020)
We present conductance-matrix measurements of a three-terminal superconductor-semiconductor hybrid device consisting of two normal leads and one superconducting lead. Using a symmetry decomposition of the conductance, we find that the antisymmetric c
Externí odkaz:
http://arxiv.org/abs/1905.05505
Autor:
O'Farrell, E. C. T., Drachmann, A. C. C., Hell, M., Fornieri, A., Whiticar, A. M., Hansen, E. B., Gronin, S., Gardener, G. C., Thomas, C., Manfra, M. J., Flensberg, K., Marcus, C. M., Nichele, F.
Publikováno v:
Phys. Rev. Lett. 121, 256803 (2018)
We present measurements of one-dimensional superconductor-semiconductor Coulomb islands, fabricated by gate confinement of a two-dimensional InAs heterostructure with an epitaxial Al layer. When tuned via electrostatic side gates to regimes without s
Externí odkaz:
http://arxiv.org/abs/1804.09676
Autor:
Kringhøj, A., Casparis, L., Hell, M., Larsen, T. W., Kuemmeth, F., Leijnse, M., Flensberg, K., Krogstrup, P., Nygård, J., Petersson, K. D., Marcus, C. M.
Publikováno v:
Phys. Rev. B 97, 060508 (2018)
Coherent operation of gate-voltage-controlled hybrid transmon qubits (gatemons) based on semiconductor nanowires was recently demonstrated. Here we experimentally investigate the anharmonicity in epitaxial InAs-Al Josephson junctions, a key parameter
Externí odkaz:
http://arxiv.org/abs/1703.05643
Autor:
Deng, M. T., Vaitiekenas, S., Hansen, E. B., Danon, J., Leijnse, M., Flensberg, K., Nygård, J., Krogstrup, P., Marcus, C. M.
Publikováno v:
Science 354, 1557-1562 (2016)
Hybrid nanowires combining semiconductor and superconductor materials appear well suited for the creation, detection, and control of Majorana bound states (MBSs). We demonstrate the emergence of MBSs from coalescing Andreev bound states (ABSs) in a h
Externí odkaz:
http://arxiv.org/abs/1612.07989
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