TY  - RPRT
TI  - Harmonic entanglement with second-order nonlinearity.
AU  - Nicolai B Grosse
AU  - Warwick P Bowen
AU  - Kirk McKenzie
AU  - Ping Koy Lam
PY  - 2006
DO  - 10.1103/physrevlett.96.063601
UR  - https://pubmed.ncbi.nlm.nih.gov/16605992/
ID  - 16605992
ER  -