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@ARTICLE{Sanavio:910898,
      author       = {Sanavio, Claudio M. and Bernad, József Zsolt and Xuereb,
                      André},
      title        = {{E}stimation of disorders in the rest positions of two
                      membranes in optomechanical systems},
      journal      = {Physical review / A},
      volume       = {105},
      number       = {3},
      issn         = {2469-9926},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2022-04248},
      pages        = {032423},
      year         = {2022},
      abstract     = {The formalism of quantum estimation theory is applied to
                      estimate the disorders in the positions of two membranes
                      positioned in a driven optical cavity. We consider the
                      coupled-cavity and transmissive-regime models to obtain
                      effective descriptions of this system for different
                      reflectivity values of the membranes. Our models consist
                      also of high-temperature Brownian motions of the membranes,
                      losses of the cavity fields, the input-output formalism, and
                      a balanced homodyne photodetection of the cavity output
                      field. In this two-parameter estimation scenario, we compare
                      the classical and quantum Fisher information matrices and
                      evaluate the accuracies of the estimations. We show that
                      models offer very different estimation strategies and the
                      temperature does not have a detrimental effect on the
                      estimation accuracies but makes it more difficult to attain
                      the quantum optimal limit. Our analysis, based on recent
                      experimental parameter values, also reveals that the best
                      estimation strategies with unit efficient detectors are
                      measurements of the quadratures of the output field.},
      cin          = {PGI-8},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-8-20190808},
      pnm          = {5221 - Advanced Solid-State Qubits and Qubit Systems
                      (POF4-522)},
      pid          = {G:(DE-HGF)POF4-5221},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000770386200001},
      doi          = {10.1103/PhysRevA.105.032423},
      url          = {https://juser.fz-juelich.de/record/910898},
}