Zobrazeno 1 - 10
of 7 153
pro vyhledávání: '"Leijnse, A."'
Autor:
Svensson, Viktor, Leijnse, Martin
Realizing Majorana bound states (MBSs) in short, well-controllable chains of coupled quantum dots sidesteps the problem of disorder, but requires fine-tuning and does not give the true topological protection inherent to long chains. Here, we introduc
Externí odkaz:
http://arxiv.org/abs/2407.09211
We investigate non-equilibrium transport of charge and heat through an interacting quantum dot coupled to a finite electron reservoir. Both the quantum dot and the finite reservoir are coupled to conventional electric contacts, i.e., infinite electro
Externí odkaz:
http://arxiv.org/abs/2407.07727
Autor:
Valentini, Marco, Souto, Rubén Seoane, Borovkov, Maksim, Krogstrup, Peter, Meir, Yigal, Leijnse, Martin, Danon, Jeroen, Katsaros, Georgios
Superconductor-semiconductor hybrid systems play a crucial role in realizing nanoscale quantum devices, including hybrid qubits, Majorana bound states, and Kitaev chains. For such hybrid devices, subgap states play a prominent role in their operation
Externí odkaz:
http://arxiv.org/abs/2407.05195
The description of quantum transport in the strong system-reservoir coupling regime poses a significant theoretical and computational challenge that demands specialized tools for accurate analysis. RealTimeTransport is a new open-source C++ library t
Externí odkaz:
http://arxiv.org/abs/2405.18340
Autor:
Kobiałka, Aksel, Awoga, Oladunjoye A., Leijnse, Martin, Domański, Tadeusz, Holmvall, Patric, Black-Schaffer, Annica M.
We investigate the properties of a Fibonacci quasicrystal (QC) arrangement of a one-dimensional topological superconductor, such as a magnetic atom chain deposited on a superconducting surface. We uncover a general mutually exclusive competition betw
Externí odkaz:
http://arxiv.org/abs/2405.12178
Autor:
Benestad, Jacob, Tsintzis, Athanasios, Souto, Rubén Seoane, Leijnse, Martin, van Nieuwenburg, Evert, Danon, Jeroen
We demonstrate reliable machine-learned tuning of quantum-dot-based artificial Kitaev chains to Majorana sweet spots, using the covariance matrix adaptation algorithm. We show that a loss function based on local tunnelling-spectroscopy features of a
Externí odkaz:
http://arxiv.org/abs/2405.01240
Autor:
Neumann, Niels M. P., van der Linde, Stan, de Kok, Willem, Leijnse, Koen, Boschero, Juan, Aguilera, Esteban, Berg, Peter Elias-van den, Koppen, Vincent, Jaspers, Nikki, Zwetsloot, Jelte
In recent years, the supply and demand of electricity has significantly increased. As a result, the interconnecting grid infrastructure has required (and will continue to require) further expansion, while allowing for rapid resolution of unforeseen f
Externí odkaz:
http://arxiv.org/abs/2405.00434
Autor:
Souto, Rubén Seoane, Leijnse, Martin, Schrade, Constantin, Valentini, Marco, Katsaros, Georgios, Danon, Jeroen
Publikováno v:
Phys. Rev. Research 6, L022002 (2024)
Josephson diodes are superconducting elements that show an asymmetry in the critical current depending on the direction of the current. Here, we theoretically explore how an alternating current bias can tune the response of such a diode. We show that
Externí odkaz:
http://arxiv.org/abs/2312.09204
Autor:
Debbarma, Rousan, Tsintzis, Athanasios, Aspegren, Markus, Souto, Rubén Seoane, Lehmann, Sebastian, Dick, Kimberly, Leijnse, Martin, Thelander, Claes
In this work, we manipulate the phase shift of a Josephson junction using a parallel double quantum dot (QD). By employing a superconducting quantum interference device, we determine how orbital hybridization and detuning affect the current-phase rel
Externí odkaz:
http://arxiv.org/abs/2311.11867
Publikováno v:
Phys. Rev. B 109, 035415 (2024)
The possibility to engineer a Kitaev chain in quantum dots coupled via superconductors has recently emerged as a promising path toward topological superconductivity and possibly nonabelian physics. Here, we show that it is possible to avoid some of t
Externí odkaz:
http://arxiv.org/abs/2310.03536