We use the electronic spin of a single Nitrogen-Vacancy (NV) defect in diamond to observe the real-time evolution of neighboring single nuclear spins under ambient conditions. Using a diamond sample with a natural abundance of 13C isotopes, we first demonstrate high fidelity initialization and single-shot readout of an individual 13C nuclear spin. By including the intrinsic 14N nuclear spin of the NV defect in the quantum register, we then report the simultaneous observation of quantum jumps linked to both nuclear spin species, providing an efficient initialization of the two qubits. These results open up new avenues for diamond-based quantum information processing including active feedback in quantum error correction protocols and tests of quantum correlations with solid-state single spins at room temperature.
@article{arxiv.1210.6195,
title = {Single-shot readout of multiple nuclear spin qubits in diamond under ambient conditions},
author = {A. Dréau and P. Spinicelli and J. R. Maze and J. -F. Roch and V. Jacques},
journal= {arXiv preprint arXiv:1210.6195},
year = {2015}
}
Comments
11 pages including supplementary information. Bibliography corrected