2011/02/28 by Filippus S. Roux · 1 citation
Physics and Astronomy · #physics.optics #quant-ph
paper · pdf · doi:10.1103/physreva.83.053822
published as Physical Review A, Vol 83, 053822 (2011) · 12 pages, 3 figures, expanded version of arXiv:1009.1956. Minor corrections to improve clarity
arxiv created 2011/05/11 · arxiv updated 2011/05/20
We derive a first order differential equation for the decoherence of an orbital angular momentum entangled biphoton state propagating through a turbulent atmosphere. The derivation is based on the distortion that orbital angular momentum states experience due to propagation through a thin sheet of turbulent atmosphere. This distortion is treated as an infinitesimal transformation leading to a first order differential equation, which we call an infinitesimal propagation equation. The equation is applied to a simple qubit case to show how the entanglement decays.