dc.contributor.author |
Hamadou Ibrahim, A
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dc.contributor.author |
Roux, FS
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dc.contributor.author |
Konrad, T
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|
dc.date.accessioned |
2011-10-07T09:00:22Z |
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dc.date.available |
2011-10-07T09:00:22Z |
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dc.date.issued |
2011-08 |
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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 |
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dc.identifier.uri |
http://hdl.handle.net/10204/5207
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|
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 |
Conference Presentation |
en_US |
dc.identifier.apacitation |
Hamadou Ibrahim, A., Roux, F., & Konrad, T. (2011). Parameter dependence of the decoherence of orbital angular momentum entanglement in atmospheric turbulence. SPIE. http://hdl.handle.net/10204/5207 |
en_ZA |
dc.identifier.chicagocitation |
Hamadou Ibrahim, A, FS Roux, and T Konrad. "Parameter dependence of the decoherence of orbital angular momentum entanglement in atmospheric turbulence." (2011): http://hdl.handle.net/10204/5207 |
en_ZA |
dc.identifier.vancouvercitation |
Hamadou Ibrahim A, Roux F, Konrad T, Parameter dependence of the decoherence of orbital angular momentum entanglement in atmospheric turbulence; SPIE; 2011. http://hdl.handle.net/10204/5207 . |
en_ZA |
dc.identifier.ris |
TY - Conference Presentation
AU - Hamadou Ibrahim, A
AU - Roux, FS
AU - Konrad, T
AB - 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.
DA - 2011-08
DB - ResearchSpace
DP - CSIR
KW - Orbital angular momentum
KW - Free space quantum communication
KW - Quantum communications
KW - Quantum imaging
KW - Atmospheric turbulence
LK - https://researchspace.csir.co.za
PY - 2011
SM - 9780819487735
T1 - Parameter dependence of the decoherence of orbital angular momentum entanglement in atmospheric turbulence
TI - Parameter dependence of the decoherence of orbital angular momentum entanglement in atmospheric turbulence
UR - http://hdl.handle.net/10204/5207
ER -
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en_ZA |