Harmonic entanglement with second-order nonlinearity.
We investigate the second-order nonlinear interaction as a means to generate entanglement between fields of differing wavelengths and show that perfect entanglement can, in principle, be produced between the fundamental and second-harmonic fields in these processes. Neither pure second-harmonic generation nor parametric oscillation optimally produce entanglement; such optimal entanglement is rather produced by an intermediate process.
Grosse
Nicolai B
NB
Quantum Optics Group, Department of Physics, Faculty of Science, The Australian National University, ACT 0200, Australia.
Bowen
Warwick P
WP
McKenzie
Kirk
K
Lam
Ping Koy
PK