International Journal of Optics / 2009 / Article / Fig 2

Research Letter

Pump Spectral Bandwidth, Birefringence, and Entanglement in Type-II Parametric Down Conversion

Figure 2

The concurrence as a function of the pump spectral width 𝜎 𝑝 for different values of the ratio of the crystal transit times ( 𝜏 𝑝 2 / 𝜏 𝑝 3 ). The dotted curves are the exact, and the solid curves are approximate. The in-set on the top represents the phase-matching functions, exact (the dotted curve) and approximate (the solid curve).
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