Heralded entanglement of arbitrary degree in remote qubits

Schilling, U.; Thiel, C.; Solano, E.; Bastin, T.; von Zanthier, J.

doi:10.1103/PhysRevA.80.022312

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Heralded entanglement of arbitrary degree in remote qubits

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Schilling, U.
Max Planck Fellow Group, Max Planck Institute for the Science of Light, Max Planck Society;

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Thiel, C.
International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society;
Max Planck Fellow Group, Max Planck Institute for the Science of Light, Max Planck Society;

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von Zanthier, J.
Max Planck Fellow Group, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Schilling, U., Thiel, C., Solano, E., Bastin, T., & von Zanthier, J. (2009). Heralded entanglement of arbitrary degree in remote qubits. PHYSICAL REVIEW A, 80(2): 022312. doi:10.1103/PhysRevA.80.022312.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6BC9-D

Abstract

Incoherent scattering of photons off two remote atoms with a Lambda-level structure is used as a basic Young-type interferometer to herald long-lived entanglement of an arbitrary degree. The degree of entanglement, as measured by the concurrence, is found to be tunable by two easily accessible experimental parameters. Fixing one of them to certain values unveils an analog to the Malus' law. An estimate of the variation in the degree of entanglement due to uncertainties in an experimental realization is given.