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Trapped Ion Quantum Computing

Efficient quantification of non-Gaussian spin distributions

arXiv
Authors: B. Dubost, M. Koschorreck, M. Napolitano, N. Behbood, R. J. Sewell, M. W. Mitchell

Year

2011

Paper ID

29171

Status

Preprint

Abstract Read

~2 min

Abstract Words

91

Citations

N/A

Abstract

We study theoretically and experimentally the quantification of non-Gaussian distributions via non-destructive measurements. Using the theory of cumulants, their unbiased estimators, and the uncertainties of these estimators, we describe a quantification which is simultaneously efficient, unbiased by measurement noise, and suitable for hypothesis tests, e.g., to detect non-classical states. The theory is applied to cold 87Rb spin ensembles prepared in non-gaussian states by optical pumping and measured by non-destructive Faraday rotation probing. We find an optimal use of measurement resources under realistic conditions, e.g., in atomic ensemble quantum memories.

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  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2011 reference point for readers tracking recent quantum research.
  • We study theoretically and experimentally the quantification of non-Gaussian distributions via non-destructive measurements.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1112.3814 [2] arXiv https://arxiv.org/abs/1112.3814 [3] Publisher https://arxiv.org/abs/1112.3814

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