A molecular quantum spin network controlled by a single qubit

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2017
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Schlipf, Lukas
Zappe, Andrea
de Oliveira, Felipe Fávaro
Kern, Bastian
Wrachtrup, Jörg
Finkler, Amit
et al.
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Science advances. 2017, 3(8), e1701116. eISSN 2375-2548. Available under: doi: 10.1126/sciadv.1701116
Zusammenfassung

Scalable quantum technologies require an unprecedented combination of precision and complexity for designing stable structures of well-controllable quantum systems on the nanoscale. It is a challenging task to find a suitable elementary building block, of which a quantum network can be comprised in a scalable way. We present the working principle of such a basic unit, engineered using molecular chemistry, whose collective control and readout are executed using a nitrogen vacancy (NV) center in diamond. The basic unit we investigate is a synthetic polyproline with electron spins localized on attached molecular side groups separated by a few nanometers. We demonstrate the collective readout and coherent manipulation of very few (≤ 6) of these S = 1/2 electronic spin systems and access their direct dipolar coupling tensor. Our results show that it is feasible to use spin-labeled peptides as a resource for a molecular qubit-based network, while at the same time providing simple optical readout of single quantum states through NV magnetometry. This work lays the foundation for building arbitrary quantum networks using well-established chemistry methods, which has many applications ranging from mapping distances in single molecules to quantum information processing.

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ISO 690SCHLIPF, Lukas, Andrea ZAPPE, Felipe Fávaro DE OLIVEIRA, Bastian KERN, Mykhailo AZARKH, Malte DRESCHER, Markus TERNES, Klaus KERN, Jörg WRACHTRUP, Amit FINKLER, 2017. A molecular quantum spin network controlled by a single qubit. In: Science advances. 2017, 3(8), e1701116. eISSN 2375-2548. Available under: doi: 10.1126/sciadv.1701116
BibTex
@article{Schlipf2017molec-40905,
  year={2017},
  doi={10.1126/sciadv.1701116},
  title={A molecular quantum spin network controlled by a single qubit},
  number={8},
  volume={3},
  journal={Science advances},
  author={Schlipf, Lukas and Zappe, Andrea and de Oliveira, Felipe Fávaro and Kern, Bastian and Azarkh, Mykhailo and Drescher, Malte and Ternes, Markus and Kern, Klaus and Wrachtrup, Jörg and Finkler, Amit},
  note={Article Number: e1701116}
}
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