Quantum dense coding with atomic qubits

We report the implementation of quantum dense coding on individual atomic qubits with the use of two trapped 9Be+ ions. The protocol is implemented with a complete Bell measurement that distinguishes the four operations used to encode two bits of classical information. We measure an average transmis...

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Published in:Physical review letters 2004-07, Vol.93 (4), p.040505.1-040505.4, Article 040505
Main Authors: SCHAETZ, T, BARRETT, M. D, LEIBFRIED, D, CHIAVERINI, J, BRITTON, J, ITANO, W. M, JOST, J. D, LANGER, C, WINELAND, D. J
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Language:English
Subjects:
Atomic and molecular physics
Atomic properties and interactions with photons
Classical and quantum physics: mechanics and fields
Coherent control of atomic interactions with photons
Exact sciences and technology
Photon interactions with atoms
Physics
Quantum computation
Quantum information
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container_title Physical review letters
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creator SCHAETZ, T
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description We report the implementation of quantum dense coding on individual atomic qubits with the use of two trapped 9Be+ ions. The protocol is implemented with a complete Bell measurement that distinguishes the four operations used to encode two bits of classical information. We measure an average transmission fidelity of 0.85(1) and determine a channel capacity of 1.16(1).
doi_str_mv 10.1103/PhysRevLett.93.040505
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects Atomic and molecular physics
Atomic properties and interactions with photons
Classical and quantum physics: mechanics and fields
Coherent control of atomic interactions with photons
Exact sciences and technology
Photon interactions with atoms
Physics
Quantum computation
Quantum information
title Quantum dense coding with atomic qubits
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