Dispersion spreading of polarization-entangled states of light and two-photon interference
arXiv:quant-ph/0607137 · doi:10.1134/S1054660X0704041X
Abstract
We study the interference structure of the second-order intensity correlation function for polarization-entangled two-photon light obtained from type-II collinear frequency-degenerate spontaneous parametric down-conversion (SPDC). The structure is visualised due to the spreading of the two-photon amplitude as two-photon light propagates through optical fibre with group-velocity dispersion (GVD). Because of the spreading, polarization-entangled Bell states can be obtained without any birefringence compensation at the output of the nonlinear crystal; instead, proper time selection of the intensity correlation function is required. A birefringent material inserted at the output of the nonlinear crystal (either reducing the initial o-e delay between the oppositely polarized twin photons or increasing this delay) leads to a more complicated interference structure of the correlation function.
arXiv commentExtended version of our recent PRL paper. Submitted to PRA
References in corpus (7)
- Research on Hidden Variable Theories: a review of recent progresses
- Optical-fiber source of polarization-entangled photon pairs in the 1550nm telecom band
- Generation of polarization entangled photon pairs and violation of Bell's inequality using spontaneous four-wave mixing in fiber loop
- High brightness single mode source of correlated photon pairs using a photonic crystal fiber
- Entangled Two-Photon Wave Packet in a Dispersive Medium
- Dispersion spreading of biphotons in optical fibres and two-photon interference
- Effective conductivity of 2D isotropic two-phase systems in magnetic field