Entangling quantum and classical states of light – hybrid entanglement (Nature Photonics 2014, Cover Article for July Issue.)
[1] H. Jeong, A. Zavatta, M. Kang, S.-W. Lee, L. S. Costanzo, S. Grandi, T. C. Ralph, and M. Bellini, Generation of hybrid entanglement of light, Nature Photon 8, 564 (2014).