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dc.contributor.author Hamadou Ibrahim, A
dc.contributor.author Roux, FS
dc.contributor.author Konrad, T
dc.date.accessioned 2011-10-07T09:00:22Z
dc.date.available 2011-10-07T09:00:22Z
dc.date.issued 2011-08
dc.identifier.citation Hamadou Ibrahim, A, Roux, FS and Konrad, T. 2011. Parameter dependence of the decoherence of orbital angular momentum entanglement in atmospheric turbulence. Quantum Communications and Quantum Imaging IX, San Diego, California, USA, 24-25 August 2011 en_US
dc.identifier.isbn 9780819487735
dc.identifier.uri http://hdl.handle.net/10204/5207
dc.description Quantum Communications and Quantum Imaging IX, San Diego, California, USA, 24-25 August 2011 en_US
dc.description.abstract he orbital angular momentum (OAM) state of light can potentially be used to implement higher dimensional entangled systems for quantum communication. Unfortunately, optical fibers in use today support only modes with zero OAM values. Free-space quantum communication is an alternative to traditional way of communicating through optical fibers. However the refractive index fluctuation of the atmosphere gives rise to random phase aberrations on a propagating optical beam. To transmit quantum information successfully through a free-space optical channel, one needs to understand how atmospheric turbulence influences quantum entanglement. Here, we present a numerical study of the evolution of quantum entanglement between a pair of qubits. The qubits consist of photons entangled in the OAM basis. The photons propagate in a turbulent atmosphere modeled by a series of consecutive phase screens based on the Kolmogorov theory of turbulence. Maximally entangled initial states are considered, and the concurrence is used as a measure of entanglement. We show how the evolution of entanglement is influenced by various parameters such as the beam waist, the strength of the turbulence and the wavelength of the beam. We restricted our analysis to the OAM values l = ±1 and we compared our results to previous work. en_US
dc.language.iso en en_US
dc.publisher SPIE en_US
dc.relation.ispartofseries Workflow request;7328
dc.subject Orbital angular momentum en_US
dc.subject Free space quantum communication en_US
dc.subject Quantum communications en_US
dc.subject Quantum imaging en_US
dc.subject Atmospheric turbulence en_US
dc.title Parameter dependence of the decoherence of orbital angular momentum entanglement in atmospheric turbulence en_US
dc.type Presentation en_US


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