ArticleNature communications2025
Storing quantum coherence in a quantum dot nuclear spin ensemble for over 100 milliseconds.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Coherent control of quantum-dot spins with cyclic optical transitions.Nature communications · 2026Article
- Low-Field Optical Polarization in Type-II Quantum Dots via Nuclear-Driven Dark State Mixing.Nano letters · 2026Article
- Practical blueprint for low-depth photonic quantum computing with quantum dots.NPJ quantum information · 2026Article
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Authors and funding
5 authors.
Funding
Abstract
States with long coherence are a crucial requirement for qubits and quantum memories. Nuclear spins in epitaxial GaAs/AlGaAs quantum dots are a great candidate, offering excellent isolation from external environments and on-demand coupling to optical flying qubits. However, coherence times are limited to ≲ 1 ms by the dipole-dipole interactions between the nuclei and by the nuclear quadrupolar coupling to inhomogeneous crystal strain. Here, we combine strain engineering of the nuclear spin ensemble and tailored dynamical decoupling sequences to achieve nuclear spin coherence times exceeding 100 ms. Recently, a reversible transfer of quantum information into nuclear spin ensembles has been demonstrated in quantum dots: our results provide a path to develop this concept into a functioning solid-state quantum memory suitable for quantum repeaters in optical quantum communication networks.
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Registered trials
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