Exciton entanglement in two coupled semiconductor microcrystallites

Details Exciton entanglement in two coupled semiconductor microcrystallites Exciton entanglement in two coupled semiconductor microcrystallites

2004-01-29

arxiv.org/abs/quant-ph/0401182v2

J. Phys. A 37, 4423-4436 (2004)

Physics

Quantum Physics

16 pages, 6 figures

Scientific paper

10.1088/0305-4470/37/15/010

Entanglement of the excitonic states in the system of two coupled semiconductor microcrystallites, whose sizes are much larger than the Bohr radius of exciton in bulk semiconductor but smaller than the relevant optical wavelength, is quantified in terms of the entropy of entanglement. It is observed that the nonlinear interaction between excitons increases the maximum values of the entropy of the entanglement more than that of the linear coupling model. Therefore, a system of two coupled microcrystallites can be used as a good source of entanglement with fixed exciton number. The relationship between the entropy of the entanglement and the population imbalance of two microcrystallites is numerically shown and the uppermost envelope function for them is estimated by applying the Jaynes principle.

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