Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Albrecht, S. M."'
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
Publikováno v:
Nature Nanotechnology 12, 212 (2017)
Epitaxial semiconductor-superconductor hybrid materials are an excellent basis for studying mesoscopic and topological superconductivity, as the semiconductor inherits a hard superconducting gap while retaining tunable carrier density. Here, we inves
Externí odkaz:
http://arxiv.org/abs/1605.01865
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
Autor:
Taupin, M., Mannila, E., Krogstrup, P., Maisi, V. F., Nguyen, H., Albrecht, S. M., Nygard, J., Marcus, C. M., Pekola, J. P.
Publikováno v:
Phys. Rev. Applied 6, 054017 (2016)
We report on fabrication of single-electron transistors using InAs nanowires with epitaxial aluminium with fixed tunnel barriers made of aluminium oxide. The devices exhibit a hard superconducting gap induced by the proximized aluminium cover shell a
Externí odkaz:
http://arxiv.org/abs/1601.01149
Publikováno v:
Phys. Rev. Lett. 116, 050501 (2016)
Surface codes have emerged as promising candidates for quantum information processing. Building on the previous idea to realize the physical qubits of such systems in terms of Majorana bound states supported by topological semiconductor nanowires, we
Externí odkaz:
http://arxiv.org/abs/1509.05345
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
Autor:
Krogstrup, P., Ziino, N. L. B., Chang, W., Albrecht, S. M., Madsen, M. H., Johnson, E., Nygård, J., Marcus, C. M., Jespersen, T. S.
Publikováno v:
Nature Materials 14, 400 (2015)
Controlling the properties of semiconductor/metal interfaces is a powerful method for designing functionality and improving the performance of electrical devices. Recently semiconductor/superconductor hybrids have appeared as an important example whe
Externí odkaz:
http://arxiv.org/abs/1411.6254
Autor:
Madsen, K. H., Ates, S., Liu, J., Javadi, A., Albrecht, S. M., Yeo, I., Stobbe, S., Lodahl, P.
Publikováno v:
Phys. Rev. B 90, 155303 (2014)
We demonstrate a single-photon collection efficiency of $(44.3\pm2.1)\%$ from a quantum dot in a low-Q mode of a photonic-crystal cavity with a single-photon purity of $g^{(2)}(0)=(4\pm5)\%$ recorded above the saturation power. The high efficiency is
Externí odkaz:
http://arxiv.org/abs/1402.6967
Autor:
Chang, W.1, Albrecht, S. M.2, Jespersen, T. S.2, Kuemmeth, F.2, Krogstrup, P.2, Nygård, J.2, Marcus, C. M.2
Publikováno v:
Nature Nanotechnology. Mar2015, Vol. 10 Issue 3, p232-236. 5p.
