Journal
PHYSICAL REVIEW APPLIED
Volume 9, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.9.024015
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Funding
- National Key RD Program [2016YFA0301700]
- NSFC [11575172, 61674132, 11674300, 11625419, 91421303]
- SPRP of CAS [XDB01030000]
- Fundamental Research Fund for the Central Universities
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In a specially designed semiconductor device consisting of three capacitively coupled double quantum dots, we achieve strong and tunable coupling between a target qubit and two control qubits. We demonstrate how to completely switch on and off the target qubit's coherent rotations by presetting two control qubits' states. A Toffoli gate is, therefore, possible based on these control effects. This research paves a way for realizing full quantum-logic operations in semiconductor multiqubit systems.
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