376 citations · 3.6k across the 82 of their papers we have counts for
9 papers · 1 filter
Density matrix renormalization group study of a quantum impurity model with Landau-Zener time-dependent Hamiltonian
Cheng Guo, Andreas Weichselbaum, Stefan Kehrein +2
We use the adaptive time-dependent density matrix renormalization group method (t-DMRG) to study the nonequilibrium dynamics of a benchmark quantum impurity system which has a time…
A quantum criticality perspective on the charging of narrow quantum-dot levels
V. Kashcheyevs, C. Karrasch, T. Hecht +3
Understanding the charging of exceptionally narrow levels in quantum dots in the presence of interactions remains a challenge within mesoscopic physics. We address this fundamental…
Kondo decoherence: finding the right spin model for iron impurities in gold and silver
T. A. Costi, L. Bergqvist, A. Weichselbaum +8
We exploit the decoherence of electrons due to magnetic impurities, studied via weak localization, to resolve a longstanding question concerning the classic Kondo systems of Fe imp…
Constrained optimization of sequentially generated entangled multiqubit states
Hamed Saberi, Andreas Weichselbaum, Lucas Lamata +3
We demonstrate how the matrix-product state formalism provides a flexible structure to solve the constrained optimization problem associated with the sequential generation of entan…
Interplay of mesoscopic and Kondo effects for transmission amplitude of few-level quantum dots
Theresa Hecht, Andreas Weichselbaum, Yuval Oreg +1
The magnitude and phase of the transmission amplitude of a multi-level quantum dot is calculated for the mesoscopic regime of level spacing large compared to level width. The inter…
Matrix product state approach for a two-lead, multi-level Anderson impurity model
Andreas Holzner, Andreas Weichselbaum, Jan von Delft
We exploit the common mathematical structure of the numerical renormalization group and the density matrix renormalization group, namely, matrix product states, to implement an eff…