Wednesday, October 24, 2012

1210.6195 (A. Dréau et al.)

Single-shot readout of multiple nuclear spin qubits in diamond under
ambient conditions
   [PDF]

A. Dréau, P. Spinicelli, J. R. Maze, J. -F. Roch, V. Jacques
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 $^{13}$C isotopes, we first demonstrate high fidelity initialization and single-shot readout of an individual $^{13}$C nuclear spin. By including the intrinsic $^{14}$N 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.
View original: http://arxiv.org/abs/1210.6195

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