Entanglement-enhanced measurement of a completely unknown phase

@article{Berry2010EntanglementenhancedMO,
  title={Entanglement-enhanced measurement of a completely unknown phase},
  author={Dominic W. Berry and G. Y. Xiang and Betty Higgins and Howard Mark Wiseman and G. J. Pryde},
  journal={CLEO/QELS: 2010 Laser Science to Photonic Applications},
  year={2010},
  pages={1-2}
}
  • Dominic W. Berry, G. Y. Xiang, +2 authors G. J. Pryde
  • Published in
    CLEO/QELS: Laser Science to…
    2010
  • Physics
  • We demonstrate a method for achieving phase measurements with accuracy beyond the standard quantum limit using entangled states. A sophisticated feedback scheme means that no initial estimate of the phase is required. 

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