Infinitesimal-propagation equation for decoherence of an orbital-angular-momentum-entangled biphoton state in atmospheric turbulence

Journal Article · Sun May 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.053822· OSTI ID:21546871

Roux, Filippus S ^[1]

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1. CSIR National Laser Centre, P.O. Box 395, Pretoria 0001 (South Africa)

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.

• OSTI ID: 21546871
• Journal Information: Physical Review. A, Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevA.83.053822; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
DECAY
DIFFERENTIAL EQUATIONS
ORBITAL ANGULAR MOMENTUM
PHOTONS
QUANTUM ENTANGLEMENT
QUANTUM STATES
TRANSFORMATIONS
TURBULENCE
ANGULAR MOMENTUM
BOSONS
ELEMENTARY PARTICLES
EQUATIONS
MASSLESS PARTICLES