| Autor: |
Dubost, B., Koschorreck, M., Napolitano, M., Behbood, N., Sewell, R. J., Mitchell, M. W. |
| Rok vydání: |
2011 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. Lett. 108, 183602 (2012) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.108.183602 |
| Popis: |
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 $^{87}$Rb 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. |
| Databáze: |
arXiv |
| Externí odkaz: |
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