Nature Communications (Jan 2020)

Tensor-network approach for quantum metrology in many-body quantum systems

  • Krzysztof Chabuda,
  • Jacek Dziarmaga,
  • Tobias J. Osborne,
  • Rafał Demkowicz-Dobrzański

DOI
https://doi.org/10.1038/s41467-019-13735-9
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 12

Abstract

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The maximum precision achievable in quantum metrology is in general tractable only in few-body scenarios or in case of uncorrelated local noise. Here, the authors show a tensor networks method to compute such bounds in cases with large number of probes and short-range spatial and temporal noise correlations.