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Trapped Ion Quantum Computing

Quantum Enhanced Multiple Phase Estimation

arXiv
Authors: Peter C. Humphreys, Marco Barbieri, Animesh Datta, Ian A. Walmsley

Year

2013

Paper ID

33464

Status

Preprint

Abstract Read

~2 min

Abstract Words

109

Citations

N/A

Abstract

We study the simultaneous estimation of multiple phases as a discretised model for the imaging of a phase object. We identify quantum probe states that provide an enhancement compared to the best quantum scheme for the estimation of each individual phase separately, as well as improvements over classical strategies. Our strategy provides an advantage in the variance of the estimation over individual quantum estimation schemes that scales as O(d) where d is the number of phases. Finally, we study the attainability of this limit using realistic probes and photon-number-resolving detectors. This is a problem in which an intrinsic advantage is derived from the estimation of multiple parameters simultaneously.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2013 reference point for readers tracking recent quantum research.
  • We study the simultaneous estimation of multiple phases as a discretised model for the imaging of a phase object.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1307.7653 [2] arXiv https://arxiv.org/abs/1307.7653 [3] Publisher https://arxiv.org/abs/1307.7653

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