Nature Communications (Jul 2020)

Multiparameter squeezing for optimal quantum enhancements in sensor networks

  • Manuel Gessner,
  • Augusto Smerzi,
  • Luca Pezzè

DOI
https://doi.org/10.1038/s41467-020-17471-3
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 9

Abstract

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Quantum metrology often deals with the simultaneous estimation of multiple parameters, but the optimal use of squeezing is not yet fully understood in this case. Here, the authors define a generalised squeezing matrix that quantifies the quantum gain in a moment-based multiparameter estimation protocol.