科研之友
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摘要
Schemes for implementing quantum cloning are proposed with nitrogen-vacancy (N-V) centers in diamond confined in separated microtoroidal resonators via a single-photon input-output process and linear optics. By properly arranging and adjusting the linear optical elements to control the interaction between photons and N-V centers, we realize quantum cloning transformations, including the optimal symmetric 1 -> 2 universal, phase-covariant, and 1 -> M economical phase-covariant ones. In these schemes, photons are used as data buses and information is copied from one N-V center to the other. We also discuss the cloning fidelities and dissipative effects. The results show that the present schemes are robust under the current experimental conditions.
- 出版日期2014-10
- 单位延边大学
