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- W2027923890 abstract "We theoretically investigate the joint photodetection probabilities of the biexciton-exciton cascade in single semiconductor quantum dots and analytically derive the density matrix and the Bell's inequalities of the entangled state. Our model includes different mechanisms that may spoil or even destroy entanglement such as dephasing, energy splitting of the relay excitonic states, and incoherent population exchange between these relay levels. We explicitly relate the fidelity of entanglement to the dynamics of these processes and derive a threshold for violation of Bell's inequalities. Applied to standard InAs/GaAs self-assembled quantum dots, our model indicates that spontaneous emission enhancement of the excitonic states by cavity effects increases the fidelity of entanglement to a value allowing for violation of Bell's inequalities." @default.
- W2027923890 created "2016-06-24" @default.
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- W2027923890 date "2008-04-28" @default.
- W2027923890 modified "2023-10-01" @default.
- W2027923890 title "Bell inequalities and density matrix for polarization-entangled photons out of a two-photon cascade in a single quantum dot" @default.
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- W2027923890 doi "https://doi.org/10.1103/physreva.77.042118" @default.
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