Journal
SCIENCE
Volume 359, Issue 6380, Pages 1123-1126Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aar4054
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Funding
- European Research Council (ERC Synergy Quantum Computer Lab)
- Netherlands Organisation for Scientific Research (NWO/OCW) as part of the Frontiers of Nanoscience (NanoFront) program
- Intel Corporation
- Canada First Research Excellence Fund
- Natural Sciences and Engineering Research Council of Canada
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Long coherence times of single spins in silicon quantum dots make these systems highly attractive for quantum computation, but how to scale up spin qubit systems remains an open question. As a first step to address this issue, we demonstrate the strong coupling of a single electron spin and a single microwave photon. The electron spin is trapped in a silicon double quantum dot, and the microwave photon is stored in an on-chip high-impedance superconducting resonator. The electric field component of the cavity photon couples directly to the charge dipole of the electron in the double dot, and indirectly to the electron spin, through a strong local magnetic field gradient from a nearby micromagnet. Our results provide a route to realizing large networks of quantum dot-based spin qubit registers.
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