Quantum theory of degenerate $\chi^{(3)}$ two-photon state
Jun Chen, Kim Fook Lee, Prem Kumar · arXiv (Cornell University) · 2007
We developed a quantum theory for degenerate $\\chi^{(3)}$ two-photon state generated from optical fiber, and compared the theory predictions with an experimental result which exhibits a Hong-Ou-Mandel dip visibility of around 94%. Excellent agreement between theory and experiment has been achieved, and we attribute the missing 6% visibility mainly to spatial mode mismatch between signal and idler photons at the beamsplitter.