期刊
SCIENCE ADVANCES
卷 1, 期 3, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.1500022
关键词
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资金
- Australian Research Council Centre of Excellence for Quantum Computation and Communication Technology [CE110001027]
- U.S. Army Research Office [W911NF-13-1-0024]
- Australian National Fabrication Facility
- Australian National University
- FIRST
- Japan Society for the Promotion of Science
- MEXT
- National Science Foundation [EEC-1227110]
Large-scale quantum computers must be built upon quantum bits that are both highly coherent and locally controllable. We demonstrate the quantum control of the electron and the nuclear spin of a single P-31 atom in silicon, using a continuous microwave magnetic field together with nanoscale electrostatic gates. The qubits are tuned into resonance with the microwave field by a local change in electric field, which induces a Stark shift of the qubit energies. This method, known as A-gate control, preserves the excellent coherence times and gate fidelities of isolated spins, and can be extended to arbitrarily many qubits without requiring multiple microwave sources.
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