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Entanglement-symmetry control in a quantum-dot Cooper-pair splitter

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2017

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Braggio, Alessandro
Governale, Michele

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https://doi.org/10.1002/pssb.201600603
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http://arxiv.org/abs/1609.01902

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Physica status solidi : pss / b. 2017, 254(3), 1600603. ISSN 0370-1972. eISSN 1521-3951. Available under: doi: 10.1002/pssb.201600603

Zusammenfassung

The control of nonlocal entanglement in solid state systems is a crucial ingredient of quantum technologies. We investigate a Cooper-pair splitter based on a double quantum dot realized in a semiconducting nanowire. In the presence of interdot tunneling the system provides a simple mechanism to develop spatial entanglement even in absence of nonlocal coupling with the superconducting lead. We discuss the possibility to control the symmetry (singlet or triplet) of spatially separated, entangled electron pairs taking advantage of the spin-orbit coupling of the nanowire. We also demonstrate that the spin-orbit coupling does not impact over the entanglement purity of the nonlocal state generated in the double quantum dot system.

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ISO 690HUSSEIN, Robert, Alessandro BRAGGIO, Michele GOVERNALE, 2017. Entanglement-symmetry control in a quantum-dot Cooper-pair splitter. In: Physica status solidi : pss / b. 2017, 254(3), 1600603. ISSN 0370-1972. eISSN 1521-3951. Available under: doi: 10.1002/pssb.201600603
BibTex
@article{Hussein2017Entan-38566,
  year={2017},
  doi={10.1002/pssb.201600603},
  title={Entanglement-symmetry control in a quantum-dot Cooper-pair splitter},
  number={3},
  volume={254},
  issn={0370-1972},
  journal={Physica status solidi : pss / b},
  author={Hussein, Robert and Braggio, Alessandro and Governale, Michele},
  note={Article Number: 1600603}
}
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