Journal
SCIENCE
Volume 289, Issue 5486, Pages 1906-1909Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.289.5486.1906
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Optically induced entanglement is identified by the spectrum of the phase-sensitive homodyne-detected coherent nonlinear optical response in a single gallium arsenide quantum dot. The electron-hole entanglement involves two magneto-excitonic states differing in transition energy and polarization. The strong coupling needed for entanglement is provided through the Coulomb interaction involving the electrons and holes. The result presents a first step toward the optical realization of quantum Logic operations using two or more quantum dots.
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