Publication: Research - peer-review › Journal article – Annual report year: 2012
We experimentally verify the quantum non-Gaussian character of a conditionally generated noisy squeezed single-photon state with a positive Wigner function. Employing an optimized witness based on probabilities of squeezed vacuum and squeezed single-photon states, we prove that the state cannot be expressed as a mixture of Gaussian states. In our experiment, the non-Gaussian state is generated by conditional subtraction of a single photon from a squeezed vacuum state. The state is probed with a homodyne detector and the witness is determined by averaging a suitable pattern function over the measured homodyne data. Our experimental results are in good agreement with a theoretical fit obtained from a simple yet realistic model of the experimental setup.
|Journal||Physical Review A (Atomic, Molecular and Optical Physics)|
|State||Published - 2012|
©2012 American Physical Society
|Citations||Web of Science® Times Cited: No match on DOI|
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