Zobrazeno 1 - 10
of 123
pro vyhledávání: '"Bernd Rosenow"'
Publikováno v:
Physical Review Research, Vol 4, Iss 2, p L022023 (2022)
Following a sudden change of interactions in an integrable system of one-dimensional fermions, we analyze the dependence of the static structure factor on the observation time after the quantum quench. At small waiting times after the quench, we map
Externí odkaz:
https://doaj.org/article/8e636b2fbc70462c9a155b0e58138063
Publikováno v:
Physical Review Research, Vol 3, Iss 3, p 033049 (2021)
Chains of magnetic atoms, placed on the surface of s-wave superconductors, have been established as a laboratory for the study of Majorana bound states. In such systems, the breaking of time reversal due to magnetic moments gives rise to the formatio
Externí odkaz:
https://doaj.org/article/0f142e1913bf481ba308b4dfe70eec93
Autor:
Matthias Thamm, Bernd Rosenow
Publikováno v:
Physical Review Research, Vol 3, Iss 2, p 023221 (2021)
We study coherent electronic transport through a Coulomb blockaded superconducting Rashba wire in the cotunneling regime between conductance resonances. By varying an external Zeeman field the wire can be tuned into a topological regime, where nonloc
Externí odkaz:
https://doaj.org/article/a53705e98d5741de97023c7c5b161d4f
Publikováno v:
Physical Review Research, Vol 3, Iss 2, p 023083 (2021)
Low-energy transport in quantum Hall states is carried through edge modes and is dictated by bulk topological invariants and possibly microscopic Boltzmann kinetics at the edge. Here, we show how the presence or breaking of symmetries of the edge Ham
Externí odkaz:
https://doaj.org/article/8d5fa2289caa4c738367f54d1180179b
Autor:
Giovanni A. Frigeri, Bernd Rosenow
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043396 (2020)
The behavior of electrons in condensed matter systems is mostly determined by the repulsive Coulomb interaction. However, under special circumstances, the Coulomb interaction can be effectively attractive, giving rise to electron pairing in unconvent
Externí odkaz:
https://doaj.org/article/7304459bca424759b80d504e72e8a582
Publikováno v:
New Journal of Physics, Vol 15, Iss 8, p 085003 (2013)
Semiconductor–superconductor hybrid systems are promising candidates for the realization of Majorana fermions and topological order, i.e. topologically protected degeneracies, in solid state devices. We show that the topological order is mirrored i
Externí odkaz:
https://doaj.org/article/c26d56556dca4773b9b207dc65a4f8c1
Publikováno v:
Physical Review A. 105
The state of a quantum system may be steered towards a predesignated target state, employing a sequence of weak $\textit{blind}$ measurements (where the detector's readouts are traced out). Here we analyze the steering of a two-level system using the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10ab701f953de2151931a04a054c40f1
https://doi.org/10.1103/physreva.105.l010203
https://doi.org/10.1103/physreva.105.l010203
Particle entanglement provides information on quantum correlations in systems of indistinguishable particles. Here, we study the one particle entanglement entropy for an integrable model of spinless, interacting fermions both at equilibrium and after
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dafaf4cd817baf6cfd162faa722a3f0c
Autor:
Matthias Thamm, Bernd Rosenow
As the complexity of quantum systems such as quantum bit arrays increases, efforts to automate expensive tuning are increasingly worthwhile. We investigate machine learning based tuning of gate arrays using the CMA-ES algorithm for the case study of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f44121d03594fef48bbcda2396b5387
Neural networks have been used successfully in a variety of fields, which has led to a great deal of interest in developing a theoretical understanding of how they store the information needed to perform a particular task. We study the weight matrice
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46eecabab7a359f3cd00491fa072277f