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arXiv · 1801.00198

Sensing coherent dynamics of electronic spin clusters in solids

Emma L. Rosenfeld·Linh M. Pham·Mikhail D. Lukin·Ronald L. Walsworth
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Abstract

We present experimental observations and a study of quantum dynamics of strongly interacting electronic spins, at room temperature in the solid state. In a diamond substrate, a single nitrogen vacancy (NV) center coherently interacts with two adjacent S = 1/2 dark electron spins. We quantify NV-electron and electron-electron couplings via detailed spectroscopy, with good agreement to a model of strongly interacting spins. The electron-electron coupling enables an observation of coherent flip-flop dynamics between electronic spins in the solid state, which occur conditionally on the state of the NV. Finally, as a demonstration of coherent control, we selectively couple and transfer polarization between the NV and the pair of electron spins. These results demonstrate a key step towards full quantum control of electronic spin registers in room temperature solids.

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Emma L. Rosenfeld, Linh M. Pham, Mikhail D. Lukin, Ronald L. Walsworth. 2017-12-30. Sensing coherent dynamics of electronic spin clusters in solids. https://doi.org/10.1103/physrevlett.120.243604

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