Multipartite quantum entanglement is a powerful resource for enriching the functionality of quantum computation and quantum communication. In this Letter, we propose a new method to generate a two-photon multipath Dicke state with concurrent spontaneous parametric downconversion processes from a single periodically poled nonlinear photonic crystal. We design the poling structure to produce a three-path Dicke state where three quasi-phase-matching conditions are fulfilled simultaneously by a hybrid one- and two-dimensionally poled nonlinear photonic crystal. We use genuine multipartite entanglement concurrence to quantify the entanglement of the Dicke state. Using a more complicated poling configuration like multiple-periodically poled two-dimensional nonlinear photonic crystal, we can also produce four-path, five-path, or multipath Dicke states by a single crystal. The multiple-periodically poled two-dimensional nonlinear photonic crystal provides a new method, to the best of our knowledge, for the integrated generation of multipartite quantum light sources.
© 2019 Optical Society of AmericaFull Article | PDF Article
8 January 2019: A typographical correction was made to the author listing and to Eq. (11).
OSA Recommended Articles
J. Shi, P. Xu, M. L. Zhong, Y. X. Gong, Y. F. Bai, W. J. Yu, Q. W. Li, H. Jin, and S. N. Zhu
Opt. Express 21(7) 7875-7881 (2013)
Y.-X. Gong, P. Xu, J. Shi, L. Chen, X. Q. Yu, P. Xue, and S. N. Zhu
Opt. Lett. 37(21) 4374-4376 (2012)
Fumihiro Kaneda, Hirofumi Suzuki, Ryosuke Shimizu, and Keiichi Edamatsu
Opt. Express 27(2) 1416-1424 (2019)