A non-Markovian optical signature for detecting entanglement in coupled excitonic qubits

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We identify an optical signature for detecting entanglement in experimental nanostructure systems comprising coupled excitonic qubits. This signature owes its strength to non-Markovian dynamical effects in the second-order temporal coherence function of the emitted radiation. We calculate autocorrelation and cross-correlation functions for both selective and collective light excitation, and prove that the coherence properties of the emitted light do indeed carry information about the entanglement of the initial multi-qubit state. We also show that this signature can survive in the presence of a noisy environment.
4 pages, 4 color figures. Minor changes. Accepted version to be published in Europhysics Letters

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Mesoscale and Nanoscale Physics, Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/123665

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0506011
 http://arxiv.org/abs/cond-mat/0506011

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arXiv