Entangling atoms in photonic crystals

Jing Wang, Jiang Li, Han Zhang +2 more

Yunan Wu, Jing Wang, Minglun Mo +1 more

Siqi Zhang, Hong Li, Meixuan Li +2 more

In this paper, we have calculated the entanglement degrees of a two-level atom in the one-dimensional photonic crystals heat reservoir, researched the effect of parameter q on the quantum entanglement degrees, and given the quantum entanglement degrees curves with time evolution. We have taken the parameter q=1, 2, 3.5 and 8.5. Our results show when the parameter q=2, keep the time of entanglement degrees near E=1 longest, it is helpful to quantum communication. Furthermore, we have designed the one-dimensional photonic crystals heat reservoir, which meet the parameter q=1, 2, 3.5 and 8.5. These can guide the fabrication of quantum devices based on photonic crystals.

Akihisa Goban, Chen-Lung Hung, Su‐Peng Yu +9 more

Wei Wu, Xu Jingbo

Abstract We investigate the multipartite entanglement dynamics of a many-body system consisting of N identical two-level atoms locally embedded in their own band-gap photonic crystals. It is shown that the tripartite entanglement of this photonic-crystal system can be frozen in a stationary state. We also find that a double-sudden-change phenomenon of four-partite entanglement occurs in this photonic-crystal system during the decoherence process under certain suitable conditions.

Chen-Lung Hung, Seán M. Meenehan, Darrick E. Chang +2 more