Resilience of hybrid optical angular momentum qubits to turbulence
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D'Ambrosio, Vincenzo
Taballione, Caterina
Bisesto, Fabrizio
Slussarenko, Sergei
Aolita, Leandro
Marrucci, Lorenzo
Walborn, Stephen P
Sciarrino, Fabio
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Abstract
Recent schemes to encode quantum information into the total angular momentum of light, defining rotation-invariant hybrid qubits composed of the polarization and orbital angular momentum degrees of freedom, present interesting applications for quantum information technology. However, there remains the question as to how detrimental effects such as random spatial perturbations affect these encodings. Here, we demonstrate that alignment-free quantum communication through a turbulent channel based on hybrid qubits can be achieved with unit transmission fidelity. In our experiment, alignment-free qubits are produced with q-plates and sent through a homemade turbulence chamber. The decoding procedure, also realized with q-plates, relies on both degrees of freedom and renders an intrinsic error-filtering mechanism that maps errors into losses.
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Scientific Reports
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5
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© The Author(s). 2015. This work is licensed under a Creative Commons Attribution-NonCommercial- NoDerivs 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http:// creativecommons.org/licenses/by-nc-nd/4.0/
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Quantum information, computation and communication
Quantum optics and quantum optomechanics