Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:1303.1034 · Nature Nanotechnology

Long-distance coherent coupling in a quantum dot array

Floris Braakman, Pierre Barthelemy, Christian Reichl, W. Wegscheider, Lieven M. K. Vandersypen

Published Apr 28, 2013• 155 citations
arXivHTMLPDF
DOI
10.1038/nnano.2013.67

Related papers

Coherently coupled quantum dot arrays: A mesoscopic Mott-Hubbard approach

R. Kotlyar

•Nov 1, 1998•0 citations

Direct observation of long-distance coherent superexchange spin coupling in a quantum dot arraySpin Exchange oscillations between distant quantum dots

T. Fujita, Timothy A. Baart, Christian Reichl +2 more

APS•Jan 1, 2016•0 citations

Controlling couplings between quantum dots in a quantum dot array

Lieven M. K. Vandersypen, Tzu-Kan Hsiao, Cornelis Jacobus van Diepen

•Jan 1, 2021•0 citations

Long-Distance Superexchange between Semiconductor Quantum-Dot Electron Spins

Haifeng Qiao, Yadav P. Kandel, Saeed Fallahi +4 more

Because of their long coherence times and potential for scalability, semiconductor quantum-dot spin qubits hold great promise for quantum information processing. However, maintaining high connectivity between quantum-dot spin qubits, which favor linear arrays with nearest neighbor coupling, presents a challenge for large-scale quantum computing. In this work, we present evidence for long-distance spin-chain-mediated superexchange coupling between electron spin qubits in semiconductor quantum dots. We weakly couple two electron spins to the ends of a two-site spin chain. Depending on the spin state of the chain, we observe oscillations between the distant end spins. We resolve the dynamics of both the end spins and the chain itself, and our measurements agree with simulations. Superexchange is a promising technique to create long-distance coupling between quantum-dot spin qubits.

arXiv:2009.06071•Physical Review Letters•Jan 6, 2021•37 citations

Evidence for long-distance superexchange between semiconductor quantum-dot electron spins

Haifeng Qiao, Yadav P. Kandel, Saeed Fallahi +4 more

Due to their long coherence times and potential for scalability, semiconductor quantum-dot spin qubits hold great promise for quantum information processing. However, maintaining high connectivity between quantum-dot spin qubits, which favor linear arrays with nearest neighbor coupling, presents a challenge for large-scale quantum computing. In this work, we present evidence for long-distance spin-chain-mediated superexchange coupling between electron spin qubits in semiconductor quantum dots. We weakly couple two electron spins to the ends of a two-site spin chain. Depending on the spin state of the chain, we observe oscillations between the distant end spins. We resolve the dynamics of both the end spins and the chain itself, and our measurements agree with simulations. Superexchange is a promising technique to create long-distance coupling between quantum-dot spin qubits.

•Sep 13, 2020•0 citations

Coherence in a Quantum Dot Ensemble

Science•Jul 20, 2006•0 citations
Because of their long coherence times and potential for scalability, semiconductor quantum-dot spin qubits hold great promise for quantum information processing. However, maintaining high connectivity between quantum-dot spin qubits, which favor linear arrays with nearest neighbor coupling, presents a challenge for large-scale quantum computing. In this work, we present evidence for long-distance spin-chain-mediated superexchange coupling between electron spin qubits in semiconductor quantum dots. We weakly couple two electron spins to the ends of a two-site spin chain. Depending on the spin state of the chain, we observe oscillations between the distant end spins. We resolve the dynamics of both the end spins and the chain itself, and our measurements agree with simulations. Superexchange is a promising technique to create long-distance coupling between quantum-dot spin qubits.
Due to their long coherence times and potential for scalability, semiconductor quantum-dot spin qubits hold great promise for quantum information processing. However, maintaining high connectivity between quantum-dot spin qubits, which favor linear arrays with nearest neighbor coupling, presents a challenge for large-scale quantum computing. In this work, we present evidence for long-distance spin-chain-mediated superexchange coupling between electron spin qubits in semiconductor quantum dots. We weakly couple two electron spins to the ends of a two-site spin chain. Depending on the spin state of the chain, we observe oscillations between the distant end spins. We resolve the dynamics of both the end spins and the chain itself, and our measurements agree with simulations. Superexchange is a promising technique to create long-distance coupling between quantum-dot spin qubits.