Quick Navigation

Overview Topics Abstract Importance Paper Tools References Reactions Discussion Publication Related

Topics

Trapped Ion Quantum Computing Quantum Simulation

Exchange interaction in gate-defined quantum dots beyond the Hubbard model

arXiv
Authors: Alexander Willmes, Patrick Bethke, M. Mohamed El Kordy Shehata, George Simion, M. A. Wolfe, Tim Botzem, Robert P. G. McNeil, Julian Ritzmann, Arne Ludwig, Andreas D. Wieck, Dieter Schuh, Dominique Bougeard, Hendrik Bluhm

Year

2025

Paper ID

16492

Status

Preprint

Abstract Read

~2 min

Abstract Words

87

Citations

N/A

Abstract

A quantitative description of the exchange interaction in quantum dots is relevant for modeling gate operations of spin qubits. By measuring the amplitude and frequency of exchange-driven qubit state oscillations, we measure the detuning dependence of the exchange coupling in a GaAs double quantum dot over three orders of magnitude. Both 1D and 3D full configuration interaction simulations can replicate the observed behavior. Extending a Hubbard model by including excited states increases the range of detuning where it provides a good fit, thus elucidating the underlying physics.

Why This Paper Matters

  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
  • It adds a 2025 reference point for readers tracking recent quantum research.
  • A quantitative description of the exchange interaction in quantum dots is relevant for modeling gate operations of spin qubits.

Paper Tools

Become a member to use research tools

Sign in to open papers, visit source links, share, cite, compare, copy DOI links, request category corrections, and build your reading list.

Become a member Sign in
Show Paper arXiv Publisher Share Cite This Paper Copy URL Compare Copy DOI Add to Reading List Category Correction Request

References & Citation Signals

[1] DOI https://doi.org/arXiv:2511.23277 [2] arXiv https://arxiv.org/abs/2511.23277 [3] Publisher https://arxiv.org/abs/2511.23277

Local Citation Graph (Related-Paper Links)

Current Paper #16492 #68474 Concentration-Free Quantum Kern... #68457 Quantum reservoir networks base... #68452 Sample-efficient benchmarking o... #68434 Lowering LCU Circuit Width thro...

External citation index: OpenAlex citation signal

Community Reactions

Quick sentiment from readers on this paper.

Score: 0
Likes: 0 Dislikes: 0

Sign in to react to this paper.

Discussion & Reviews (Moderated)

Average Rating: 0.0 / 5 (0 ratings)

No written reviews yet.