Abstract
We propose a scheme to achieve quantum gate operations within decoherence-free subspace (DFS) using nitrogen-vacancy centers in separate diamond nanocrystals coupled to a whispering-gallery mode resonator. By virtue of Raman transitions in the dispersive regime, we present two different methods for realizing quantum gating within DFS in a deterministic way. The quantum gating is seriously treated by considering all kinds of decoherence mechanisms, and the experimental feasibility is achieved using currently available technology.
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Chen, Q., Yang, W.L. & Feng, M. Quantum gate operations in decoherence-free fashion with separate nitrogen-vacancy centers coupled to a whispering-gallery mode resonator. Eur. Phys. J. D 66, 238 (2012). https://doi.org/10.1140/epjd/e2012-30368-9
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DOI: https://doi.org/10.1140/epjd/e2012-30368-9