Spectral Effects in Quantum Teleportation

Journal Article · Mon Jan 01 00:00:00 EST 2007 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.75.022307· OSTI ID:931292

Humble, Travis S ^[1]; Grice, Warren P ^[1]

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1. ORNL

We use a multimode description of polarization-encoded qubits to analyze the quantum teleportation protocol. Specifically, we investigate how the teleportation fidelity depends on the spectral correlations inherent to polarization-entangled photons generated by type-II spontaneous parametric down conversion. We find that the maximal obtainable fidelity depends on the spectral entanglement carried by the joint probability amplitude, a result which we quantify for the case of a joint spectrum approximated by a correlated Gaussian function. We contrast these results with a similar analysis of the visibility obtained in a polarization-correlation experiment.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: Work for Others (WFO)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 931292
• Journal Information: Physical Review A, Vol. 75
• Country of Publication: United States
• Language: English

Related Subjects

quantum information
teleportation
spontaneous parameteric down-conversion
entanglement