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arXiv · 1707.04104

Universal finestructure eraser for quantum dots

A. Fognini·A. Ahmadi·S. J. Daley·M. E. Reimer·V. Zwiller
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Abstract

The measurable degree of entanglement from a quantum dot via the biexciton-exciton cascade depends crucially on the bright exciton fine-structure splitting and on the detection time resolution. Here, we propose an optical approach with fast rotating waveplates to erase this fine-structure splitting and therefore obtain a high degree of entanglement with near-unity efficiency. Our optical approach is possible with current technology and is also compatible with any quantum dot showing fine-structure splitting.

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A. Fognini, A. Ahmadi, S. J. Daley, M. E. Reimer, V. Zwiller. 2017-07-13. Universal finestructure eraser for quantum dots. https://doi.org/10.1364/oe.26.024487

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