We investigate a candidate for the potential implementation of entanglement purification of two entangled nitrogen vacancy (N-V) centers that are coupled with two microtoroidal resonators. In our proposed entanglement purification protocol (EPP), mixed entangled ensembles can be purified with the local parity-check operations. With current and near-future technology, we can achieve the maximally entangled N-V centers nonlocally. And our EPP can be used in quantum repeaters for long-distance quantum communication.
© 2012 Optical Society of America
Original Manuscript: September 7, 2012
Revised Manuscript: October 11, 2012
Manuscript Accepted: October 19, 2012
Published: November 19, 2012
Chuan Wang, Yong Zhang, Guang-Sheng Jin, and Ru Zhang, "Efficient entanglement purification of separate nitrogen-vacancy centers via coupling to microtoroidal resonators," J. Opt. Soc. Am. B 29, 3349-3354 (2012)