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Coherent spin qubit shuttling through germanium quantum dots

Authors: Floor van Riggelen-Doelman; Chien-An Wang; Sander L. de Snoo; William I. L. Lawrie; Nico W. Hendrickx; Maximilian Rimbach-Russ; Amir Sammak; +3 Authors

Coherent spin qubit shuttling through germanium quantum dots

Abstract

AbstractQuantum links can interconnect qubit registers and are therefore essential in networked quantum computing. Semiconductor quantum dot qubits have seen significant progress in the high-fidelity operation of small qubit registers but establishing a compelling quantum link remains a challenge. Here, we show that a spin qubit can be shuttled through multiple quantum dots while preserving its quantum information. Remarkably, we achieve these results using hole spin qubits in germanium, despite the presence of strong spin-orbit interaction. In a minimal quantum dot chain, we accomplish the shuttling of spin basis states over effective lengths beyond 300 microns and demonstrate the coherent shuttling of superposition states over effective lengths corresponding to 9 microns, which we can extend to 49 microns by incorporating dynamical decoupling. These findings indicate qubit shuttling as an effective approach to route qubits within registers and to establish quantum links between registers.

Country
Netherlands
Keywords

Quantum Physics, Condensed Matter - Mesoscale and Nanoscale Physics, Science, Q, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), FOS: Physical sciences, spin qubits, hole spins, coherent, shuttling, Quantum Physics (quant-ph), Article

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
OpenAIRE UsageCountsViews provided by UsageCounts
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35
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24
2
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