25 October 2011 Entanglement of formation of pair of quantum dots
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Abstract
The Entanglement of quantum systems is a key aspect in order to understand the dynamics and behavior of mixed systems (density matrix) as bipartite systems of quantum bits (q-bits). A quantifiable measure widely used is the "entanglement of formation" of a mixed state, defined as the minimum number of singlets needed to create an ensemble of pure states that represents the density matrix of the system. Considering a double quantum dot system coupled cavity type Jaynes-Cummings investigate the entanglement between two quantum dots, immersed each in its own cavity, showing analytically that entanglement has a very interesting effects such as temporal evolution including the so-called sudden death effect.
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S. Sergio Sánchez, J. J. Sánchez Mondragón, J. C García Melgarejo, A. Alejo-Molina, "Entanglement of formation of pair of quantum dots", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80113Z (25 October 2011); doi: 10.1117/12.903406; https://doi.org/10.1117/12.903406
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