Influence of the spectral bandwidth in the entanglement of a nondegenerate parametric amplifier

Details Influence of the spectral bandwidth in the entanglement of a nondegenerate parametric amplifier Influence of the spectral bandwidth in the entanglement of a nondegenerate parametric amplifier

2012-03-05

arxiv.org/abs/1203.0976v2

Physics

Quantum Physics

11 pages, 5 figures

Scientific paper

We propose a simple model for the nondegenerate parametric inter- action that takes into account the finite spectral bandwidth of the pump wave. The Heisenberg equations of motion are solved exactly and we show that the bosonic operators obey to a generalized Bogoliubov transforma- tion, where the degree of squeezing depends on the spectral bandwidth. The average number of photons produced in the interaction, the degree of squeezing as well as the degree of entanglement are computed showing that they decrease with increasing spectral bandwidth.

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