Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Jukka I. Väyrynen"'
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
A superconducting diode effect was recently reported in Nb/V/Ta superlattices, but the mechanism is not yet clear. Here, the authors study non-reciprocal critical current in Al/InAs nanowires and propose a generic extrinsic mechanism involving field-
Externí odkaz:
https://doaj.org/article/4e8752eac5d046b39b273a87bd8adecf
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p 033109 (2023)
After a decade of intense theoretical and experimental efforts, demonstrating braiding of Majorana modes remains an unsolved problem in condensed matter physics due to platform-specific challenges. In this work, we propose topological superconductor
Externí odkaz:
https://doaj.org/article/888c6e52d43b47ea817e6c7c51257476
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043228 (2020)
We consider a mesoscopic superconducting island hosting multiple pairs of Majorana zero-energy modes. The Majorana island consists of multiple p-wave wires connected together by a trivial (s-wave) superconducting backbone and is characterized by an o
Externí odkaz:
https://doaj.org/article/6a765b47c6ca44b5a81eb5812696901c
A Coulomb blockaded $M$-Majorana island coupled to normal metal leads realizes a novel type of Kondo effect where the effective impurity "spin" transforms under the orthogonal group $SO(M)$. The impurity spin stems from the non-local topological grou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc9e6f2b20fb1709daf2b60b2a25920d
http://arxiv.org/abs/2207.10105
http://arxiv.org/abs/2207.10105
Helical edge states in quantum spin Hall (QSH) materials are central building blocks of topological matter design and engineering. Despite their principal topological protection against elastic backscattering, the level of operational stability depen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a316ed41d947bba7cfb4ec187da7bd63
Edges of quantum Hall phases give rise to a multitude of exotic modes supporting quasiparticles of different values of charge and quantum statistics. Among these are neutralons (chargeless anyons with semion statistics), which were found to be ubiqui
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07595422d1ddda6284a9db38a5160c56
We investigate the dynamics of a charge qubit consisting of two Coulomb-blockaded islands hosting Majorana zero modes. The frequency of the qubit is determined by coherent single-electron tunneling between two islands originating from the hybridizati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46b59844d06e6eaa82b4a7d0659020bd
http://arxiv.org/abs/2010.05963
http://arxiv.org/abs/2010.05963
Autor:
Leonid I. Glazman, Eugene Demler, Norman Y. Yao, Jukka I. Väyrynen, Jay D. Sau, Kamphol Akkaravarawong
Publikováno v:
Physical Review Research. 1
We propose a method to probe and control the interactions between an ensemble of magnetic impurities in a superconductor via microwave radiation. Our method relies upon the presence of sub-gap Yu-Shiba-Rusinov (YSR) states associated with the impurit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6b2c95474939cc9a8e7b7d5b56d26f8
https://doi.org/10.1103/physrevresearch.1.033091
https://doi.org/10.1103/physrevresearch.1.033091
Publikováno v:
Physical Review Letters. 122
We consider a fractional quantum Hall bilayer system with an interface between quantum Hall states of filling fractions $(\nu_{\text{top}},\nu_{\text{bottom}})=(1,1)$ and $(1/3,2)$, motivated by a recent approach to engineering artificial edges~\cite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b897624aaff5f5c44858ffeff4897b72
https://doi.org/10.1103/physrevlett.122.236802
https://doi.org/10.1103/physrevlett.122.236802
Autor:
David M. T. van Zanten, Davydas Razmadze, Eoin O'Farrell, Dmitry I. Pikulin, Peter Krogstrup, Karl Petersson, Deividas Sabonis, Charles Marcus, Torsten Karzig, Jukka I. Väyrynen, Judith Suter
Publikováno v:
Nature Physics
van Zanten, D M T, Sabonis, D, Suter, J, Vayrynen, J I, Karzig, T, Pikulin, D I, O'Farrell, E C T, Razmadze, D, Petersson, K D, Krogstrup, P & Marcus, C M 2020, ' Photon-assisted tunnelling of zero modes in a Majorana wire ', Nature Physics, vol. 16, no. 6, pp. 663-668 . https://doi.org/10.1038/s41567-020-0858-0
van Zanten, D M T, Sabonis, D, Suter, J, Vayrynen, J I, Karzig, T, Pikulin, D I, O'Farrell, E C T, Razmadze, D, Petersson, K D, Krogstrup, P & Marcus, C M 2020, ' Photon-assisted tunnelling of zero modes in a Majorana wire ', Nature Physics, vol. 16, no. 6, pp. 663-668 . https://doi.org/10.1038/s41567-020-0858-0
Majorana bound states at the end of nanowires may be used for quantum computation if they can be coupled sufficiently strongly. Here, the Copenhagen lab show strong and tunable coupling, a step along the road towards devices.Hybrid nanowires with pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c11719e9d5652389ae09c209e39d7418
http://arxiv.org/abs/1902.00797
http://arxiv.org/abs/1902.00797