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Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots
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Coupling Molecular Spin Qubits with 2D Magnets for Coherent Magnon Manipulation.
Sourav Dey1,2, Gonzalo Rivero-Carracedo1, Andrei Shumilin1
1Instituto de Ciencia Molecular (ICMol), Universitat de Valencia, c/Catedrático José Beltrán, 2, Paterna 46980, Spain.
Nano Letters
|June 17, 2025
Summary
This study explores controlling spin waves in 2D magnets using molecular spins. Researchers found that molecular configurations can tune spin wave properties, enabling chemical control for future quantum technologies.
Area of Science:
- Condensed Matter Physics
- Quantum Information Science
- Materials Science
Background:
- Magnonics offers a new paradigm for information technology using spin waves.
- Coherent control of spin waves in 2D magnets presents a significant challenge.
Purpose of the Study:
- Investigate the interaction between molecular spins and magnons in hybrid heterostructures.
- Explore chemical methods for coherent control of spin waves in 2D materials.
Main Methods:
- Utilized first-principles calculations to study hybrid heterostructures.
- Examined titanocene bis(cyclooctatetraenyl) [CpTi(cot)] and vanadyl phthalocyanine (VOPc) spin qubits on CrSBr.
- Analyzed the impact of molecular rotation configurations on magnon spectra and qubit relaxation.
Main Results:
- Different molecular configurations significantly alter magnon spectra and qubit relaxation times.
- Demonstrated that chemical approaches can achieve coherent control of spin waves.
- Identified exchange coupling as crucial for an ultrafast magnon-qubit interface with low decoherence.
Conclusions:
- Hybrid quantum magnonics can be advanced through selective chemical tailoring.
- The proposed magnon-qubit interface shows promise for minimized decoherence.
- This research opens new pathways for utilizing spin waves in quantum information processing.
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