20 February 2012 Entanglement in the biexciton cascade and the effect of pure dephasing
Author Affiliations +
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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Pierce Munnelly, 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

Back to Top