Zobrazeno 1 - 10
of 1 948
pro vyhledávání: '"Leijnse A"'
Autor:
Wozny, Simon, Leijnse, Martin
We theoretically investigate a thermoelectric heat engine based on a single-level quantum dot, calculating average quantities such as current, heat current, output power, and efficiency, as well as fluctuations (noise). Our theory is based on a diagr
Externí odkaz:
http://arxiv.org/abs/2411.13408
Autor:
Nitsch, Maximilian, Maffi, Lorenzo, Baran, Virgil V., Souto, Rubén Seoane, Paaske, Jens, Leijnse, Martin, Burrello, Michele
The Majorana tetron is a prototypical topological qubit stemming from the ground state degeneracy of a superconducting island hosting four Majorana modes. This degeneracy manifests as an effective non-local spin degree of freedom, whose most paradigm
Externí odkaz:
http://arxiv.org/abs/2411.11981
Majorana modes can be engineered in arrays where quantum dots (QDs) are coupled via grounded superconductors, effectively realizing an artificial Kitaev chain. Minimal Kitaev chains, composed by two QDs, can host fully-localized Majorana modes at dis
Externí odkaz:
http://arxiv.org/abs/2411.07068
Autor:
Svensson, Viktor, Leijnse, Martin
Publikováno v:
Phys. Rev. B 110, 155436 (2024)
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
Publikováno v:
Phys. Rev. B 110, 205423 (2024)
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