Open AccessTwo-color hyper-entangled photon pairs generation in a cold ^85Rb atomic ensemble
Author(s) -
MingXin Dong,
Wei Zhang,
Shuai Shi,
Kai Wang,
Zhiyuan Zhou,
Shi-Long Liu,
Dong-Sheng Ding,
BaoSen Shi
Publication year - 2017
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.25.010145
Subject(s) - physics , photon , photon entanglement , quantum channel , quantum information science , quantum teleportation , spontaneous parametric down conversion , quantum mechanics , four wave mixing , quantum optics , quantum information , photon polarization , quantum , quantum entanglement , polarization (electrochemistry) , electromagnetically induced transparency , quantum sensor , quantum network , optics , nonlinear optics , laser , chemistry
Hyper-entangled photon pairs are very promising in the quantum information field for enhancing the channel capacity in communication and improving compatibility for networks. Here we report on the experimental generation of a hyper-entangled photon pair at a wavelength of 795 nm and 1475 nm via the spontaneous four-wave mixing process in a cold 85 Rb atomic ensemble. The photons in each pair generated are entangled in both the time-frequency and polarization degrees of freedom. Such hyper-entangled photon pairs with special wavelength have potential applications in high-dimensional quantum communication and quantum physics.