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Paper detail

From particle counting to Gaussian tomography

All the $n(2n+3)$ mean and covariance parameters of an $n$-mode Gaussian states are expressed in terms of the expectation values of the same number of conjugates of the total number observable. This permits a complete tomography of the state. The same is applied to outputs of a Gaussian channel corresponding to selected coherent states to perform the complete tomography of the channel. This leads to some interesting problems concerning the distribution of the number operator and also tomographic complexity.

preprint2015arXivOpen access
K. R. ParthasarathyRitabrata Sengupta
math.FAmath.STStatistics Theoryquant-ph
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K. R. ParthasarathyRitabrata Sengupta

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