Scientific Reports (Jun 2017)

Spatio-Temporal Steering for Testing Nonclassical Correlations in Quantum Networks

  • Shin-Liang Chen,
  • Neill Lambert,
  • Che-Ming Li,
  • Guang-Yin Chen,
  • Yueh-Nan Chen,
  • Adam Miranowicz,
  • Franco Nori

DOI
https://doi.org/10.1038/s41598-017-03789-4
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 8

Abstract

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Abstract We introduce the concept of spatio-temporal steering (STS), which reduces, in special cases, to Einstein-Podolsky-Rosen steering and the recently-introduced temporal steering. We describe two measures of this effect referred to as the STS weight and robustness. We suggest that these STS measures enable a new way to assess nonclassical correlations in an open quantum network, such as quantum transport through nano-structures or excitation transfer in a complex biological system. As one of our examples, we apply STS to check nonclassical correlations among sites in a photosynthetic pigment-protein complex in the Fenna-Matthews-Olson model.