Zobrazeno 1 - 10
of 347
pro vyhledávání: '"KJÆRGAARD, M."'
Autor:
Hertel, A., Eichinger, M., Andersen, L. O., van Zanten, D. M. T., Kallatt, S., Scarlino, P., Kringhøj, A., Chavez-Garcia, J. M., Gardner, G. C., Gronin, S., Manfra, M. J., Gyenis, A., Kjaergaard, M., Marcus, C. M., Petersson, K. D.
Publikováno v:
Phys. Rev. Applied 18, 034042 (2022)
We present a gate-voltage tunable transmon qubit (gatemon) based on planar InAs nanowires that are selectively grown on a high resistivity silicon substrate using III-V buffer layers. We show that low loss superconducting resonators with an internal
Externí odkaz:
http://arxiv.org/abs/2202.10860
Autor:
Greene, A., Kjaergaard, M., Schwartz, M. E., Samach, G. O., Bengtsson, A., O'Keeffe, M., Kim, D. K., Marvian, M., Melville, A., Niedzielski, B. M., Vepsalainen, A., Winik, R., Yoder, J., Rosenberg, D., Lloyd, S., Orlando, T. P., Marvian, I., Gustavsson, S., Oliver, W. D.
Dynamical decoupling (DD) is a widely-used quantum control technique that takes advantage of temporal symmetries in order to partially suppress quantum errors without the need resource-intensive error detection and correction protocols. This and othe
Externí odkaz:
http://arxiv.org/abs/2102.05767
Autor:
Bøttcher, C. G. L., Nichele, F., Kjaergaard, M., Suominen, H. J., Shabani, J., Palmstrøm, C. J., Marcus, C. M.
Publikováno v:
Nature Physics 14, 1138 (2018)
The superconductor-insulator transition in two dimensions has been widely investigated as a paradigmatic quantum phase transition. The topic remains controversial, however, because many experiments exhibit a metallic regime with saturating low-temper
Externí odkaz:
http://arxiv.org/abs/1711.01451
Publikováno v:
Phys. Rev. B 97, 045421 (2018)
The proximity effect in hybrid superconductor-semiconductor structures, crucial for realizing Majorana edge modes, is complicated to control due to its dependence on many unknown microscopic parameters. In addition, defects can spoil the induced supe
Externí odkaz:
http://arxiv.org/abs/1706.08888
Autor:
Drachmann, A. C. C., Suominen, H. J., Kjaergaard, M., Shojaei, B., Palmstrøm, C. J., Marcus, C. M., Nichele, F.
Publikováno v:
Nano Lett. 17, 1200 (2017)
We demonstrate the transfer of the superconducting properties of NbTi---a large-gap high-critical-field superconductor---into an InAs heterostructure via a thin intermediate layer of epitaxial Al. Two device geometries, a Josephson junction and a gat
Externí odkaz:
http://arxiv.org/abs/1611.10166
Autor:
Suominen, H. J., Danon, J., Kjaergaard, M., Flensberg, K., Shabani, J., Palmstrøm, C. J., Nichele, F., Marcus, C. M.
Publikováno v:
Phys. Rev. B 95, 035307 (2017)
We investigate patterns of critical current as a function of perpendicular and in-plane magnetic fields in superconductor-semiconductor-superconductor (SNS) junctions based on InAs/InGaAs heterostructures with an epitaxial Al layer. This material sys
Externí odkaz:
http://arxiv.org/abs/1611.00190
Autor:
Kjaergaard, M., Suominen, H. J., Nowak, M. P., Akhmerov, A. R., Shabani, J., Palmstrøm, C. J., Nichele, F., Marcus, C. M.
Publikováno v:
Phys. Rev. Applied 7, 034029 (2017)
Measurement of multiple Andreev reflection (MAR) in a Josephson junction made from an InAs heterostructure with epitaxial aluminum is used to quantify the highly transparent semiconductor-superconductor interface, indicating near-unity transmission.
Externí odkaz:
http://arxiv.org/abs/1607.04164
Autor:
Kjaergaard, M., Nichele, F., Suominen, H. J., Nowak, M. P., Wimmer, M., Akhmerov, A. R., Folk, J. A., Flensberg, K., Shabani, J., Palmstrom, C. J., Marcus, C. M.
Publikováno v:
Nat. Commun. 7, 12841 (2016)
The prospect of coupling a two-dimensional (2D) semiconductor heterostructure to a superconductor opens new research and technology opportunities, including fundamental problems in mesoscopic superconductivity, scalable superconducting electronics, a
Externí odkaz:
http://arxiv.org/abs/1603.01852
Autor:
Shabani, J., Kjaergaard, M., Suominen, H. J., Kim, Younghyun, Nichele, F., Pakrouski, K., Stankevic, T., Lutchyn, R. M., Krogstrup, P., Feidenhans'l, R., Kraemer, S., Nayak, C., Troyer, M., Marcus, C. M., Palmstrøm, C. J.
Publikováno v:
Phys. Rev. B 93, 155402 (2016)
Progress in the emergent field of topological superconductivity relies on synthesis of new material combinations, combining superconductivity, low density, and spin-orbit coupling (SOC). For example, theory [1-4] indicates that the interface between
Externí odkaz:
http://arxiv.org/abs/1511.01127
Autor:
Barthel, C., Kjaergaard, M., Medford, J., Stopa, M., Marcus, C. M., Hanson, M. P., Gossard, A. C.
Publikováno v:
Physical Review B 81 161308(R), 2010
Single-shot measurement of the charge arrangement and spin state of a double quantum dot are reported, with measurement times down to ~ 100 ns. Sensing uses radio-frequency reflectometry of a proximal quantum dot in the Coulomb blockade regime. The s
Externí odkaz:
http://arxiv.org/abs/1001.3585