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Theory of high gain cavity-enhanced spontaneous parametric down-conversion

2014; American Physical Society; Volume: 90; Issue: 6 Linguagem: Inglês

10.1103/physreva.90.063833

1538-4446

Joanna A. Zielińska, Morgan W. Mitchell,

Quantum Information and Cryptography

We compute the output of multimode cavity-enhanced spontaneous parametric down-conversion (SPDC) for sub-threshold, but otherwise arbitrary, gain. We find analytic Bogoliubov transformations that allow us to calculate arbitrary field correlation functions, including the second-order intensity correlation function $G^{(2)}(T)$. The results show evidence of increased coherence due to stimulated SPDC. We extend an earlier model [Lu and Ou, Phys. Rev. A, 62, 033804 (2000)] to arbitrary gain and finesse, and show the extension gives accurate results in most scenarios. The results will allow simple, analytic description of cavity-based nonclassical light sources for quantum networking, quantum-enhanced sensing of atoms and generation of highly non-classical field states