Open AccessHeralded generation of multipartite entanglement for one photon by using a single two-dimensional nonlinear photonic crystal
Author(s) -
Shi Jin,
Ping Xu,
M. L. Zhong,
YanXiao Gong,
Y. F. Bai,
Weihua Yu,
qingshan li,
Hongming Jin,
Shining Zhu
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.007875
Subject(s) - quantum entanglement , physics , spontaneous parametric down conversion , photon , multipartite entanglement , w state , quantum optics , photonics , optics , photon entanglement , quantum mechanics , quantum key distribution , squashed entanglement , quantum
We propose a compact scheme for the heralded generation of single-photon multipartite entanglement by using a single two-dimensional nonlinear photonic crystal. Studies have shown that by appropriate structure design, the single-photon entanglement shared among three spatially distinct optical modes can be generated through three concurrent spontaneous parametric down-conversion processes by using the other photon in an identical spatial mode as a trigger. Furthermore, we analyze the entanglement of such heralded single-photon tripartite W-type state theoretically. This method can be expanded for the heralded single-photon N-partite entanglement generation. This compact and stable quantum light source may act as a key ingredient in quantum information science.