20 February 2012 Entanglement in the biexciton cascade and the effect of pure dephasing
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Abstract
The biexciton cascade within semiconductor quantum dots is known to be a useful source of polarizationentangled photon pairs. An analytical solution in the weak-coupling regime for quantum-state tomography matrix elements, i.e. the two-photon correlation function, is presented. It is demonstrated that with the inclusion of pure dephasing and considering degenerate exciton levels, the entanglement is not affected, and a convenient formula to calculate the degree of entanglement in an experiment is derived.
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Pierce Munnelly, Pierce Munnelly, Alexander Carmele, Alexander Carmele, } "Entanglement in the biexciton cascade and the effect of pure dephasing", Proc. SPIE 8260, Ultrafast Phenomena and Nanophotonics XVI, 82600S (20 February 2012); doi: 10.1117/12.906572; https://doi.org/10.1117/12.906572
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