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Proceedings Paper

Experimental investigation of local environment effects on the quantum teleportation fidelity
Author(s): Laura T. Knoll; Christian T. Schmiegelow; Miguel A. Larotonda
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Paper Abstract

Quantum teleportation relies on entanglement as the quantum resource to be able to communicate with fidelities beyond the classical limit. Nevertheless, the entangled resource may be afflicted by local noise, affecting its ability to serve as the entangled resource for quantum teleportation. We obtain experimental data on the influence of different local environments on the ability of an initially entangled pair of qubits to act as a teleportation resource, after it has been disturbed by noise. We generate selected conditions on the noise parameter space, both theoretically and experimentally, and we find that an already noisy protocol can be made practically insensitive to a further addition of noise. The experimental results are based on a photonic implementation of the quantum teleportation algorithm, with a polarization-entangled pair acting as the quantum resource. The state to be teleported is an additional qubit encoded in the path internal degree of freedom of Alice's photon. Interactions with different local environments on both sides of the system are either implemented with an extra qubit as the environment, or simulated as a weighed average of pure states. We compare our experimental results with the theoretical predictions, and by performing quantum process tomography we can calculate the fidelity of the quantum teleportation scheme and evaluate the effect of local environments.

Paper Details

Date Published: 1 September 2015
PDF: 11 pages
Proc. SPIE 9615, Quantum Communications and Quantum Imaging XIII, 96150R (1 September 2015); doi: 10.1117/12.2189731
Show Author Affiliations
Laura T. Knoll, CITEDEF (Argentina)
Christian T. Schmiegelow, CITEDEF (Argentina)
Univ. Mainz (Germany)
Miguel A. Larotonda, CITEDEF (Argentina)

Published in SPIE Proceedings Vol. 9615:
Quantum Communications and Quantum Imaging XIII
Ronald E. Meyers; Yanhua Shih; Keith S. Deacon, Editor(s)

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