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

F. J. Rodríguez, L. Quiroga, N. F. Johnson

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2 Scopus citations


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.

Original languageEnglish (US)
Article number50009
Issue number5
StatePublished - Mar 1 2007


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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