Roux, FS2011-07-122011-07-122011Roux, FS. 2011. Infinitesimal-propagation equation for decoherence of an orbital-angular-momentum-entangled biphoton state in atmospheric turbulence. Physical Review A, Vol. 83(053822), pp. 111098-0121http://pra.aps.org/abstract/PRA/v83/i5/e053822http://hdl.handle.net/10204/5093Copyright: 2011 American Physical Society.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.enInfinitesimal-propagation equationOrbital angular momentumDifferential equationArticleRoux, F. (2011). Infinitesimal-propagation equation for decoherence of an orbital-angular-momentum-entangled biphoton state in atmospheric turbulence. http://hdl.handle.net/10204/5093Roux, FS "Infinitesimal-propagation equation for decoherence of an orbital-angular-momentum-entangled biphoton state in atmospheric turbulence." (2011) http://hdl.handle.net/10204/5093Roux F. Infinitesimal-propagation equation for decoherence of an orbital-angular-momentum-entangled biphoton state in atmospheric turbulence. 2011; http://hdl.handle.net/10204/5093.TY - Article AU - Roux, FS AB - 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. DA - 2011 DB - ResearchSpace DP - CSIR KW - Infinitesimal-propagation equation KW - Orbital angular momentum KW - Differential equation LK - https://researchspace.csir.co.za PY - 2011 SM - 1098-0121 T1 - Infinitesimal-propagation equation for decoherence of an orbital-angular-momentum-entangled biphoton state in atmospheric turbulence TI - Infinitesimal-propagation equation for decoherence of an orbital-angular-momentum-entangled biphoton state in atmospheric turbulence UR - http://hdl.handle.net/10204/5093 ER -