A novel fiber-based scheme for generating quadrature entanglement between a specific pair of frequency bands is proposed. The scheme is based on use of a nonlinear fiber, a spectral pulse shaper, and an adaptive feedback loop. It is numerically predicted that at least -5 dB of the quadrature entanglement will be created by preparation of an appropriate initial phase spectrum. Optimal control of the four-wave mixing terms of the Kerr Hamiltonian is crucial for improvement of the entanglement.
© 2003 Optical Society of America
[Optical Society of America ]
Daisuke Fujishima, Fumihiko Kannari, Masahiro Takeoka, and Masahide Sasaki, "Generation of entanglement between frequency bands by nonlinear fiber propagation and spectral pulse shaping," Opt. Lett. 28, 275-277 (2003)