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. 2018 Jul 13;4(7):eaaq1459. doi: 10.1126/sciadv.aaq1459

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Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 2 — (A) Measured ESR spectrum for the 1P bound electron and (B) 2P donor molecule at B₀ = 1.35 T using a ±20 MHz adiabatic passage frequency chirp. Insets indicate the nuclear (double arrow) and electron (single arrow) spin eigenstates and the ESR transitions between them, each corresponding to an observed resonance peak. The measured hyperfine energies A_1P and A_2P are indicated for each donor quantum dot.