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arXiv · 1804.01123

Quantum entanglement driven by electron-vibrational mode coupling

F. M. Souza·P. A. Oliveira·L. Sanz
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Abstract

In this work, we provided a proof-of-principle of efficient production of maximally entangled states using charged quantum dots coupled to vibrational modes. The physical system consists of two pairs of quantum dots, each pair with a single electron able to tunnel between the dots, thus encoding a qubit. The electrons, initially not coupled, interact with two bosonic vibrational modes. It is demonstrated that the electron-vibrational mode coupling drives to an effective electron-electron interaction, which is the main mechanism behind the formation of maximally quantum entangled electronic states. The effect of this coupling follows a non-monotonic behavior, which is explained through an effective hamiltonian which takes into account high order transition processes.

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F. M. Souza, P. A. Oliveira, L. Sanz. 2019-08-14. Quantum entanglement driven by electron-vibrational mode coupling. https://doi.org/10.1103/physreva.100.042309

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