Journal
PHYSICAL REVIEW LETTERS
Volume 123, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.123.043601
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Funding
- Czech Science Foundation [GB14-36681G]
- MEYS [8C18003, 731473]
- QUANTERA ERA-NET
- Palacky University [IGA-Prf-2018-10, IGA-Prf-2019-10]
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Light is an essential tool for connections between quantum devices and for diagnostic processes in quantum technology. Both applications deal with advanced nonclassical states beyond Gaussian coherent and squeezed states. Current development requires a loss-tolerant diagnostic of such nonclassical aspects. We propose and experimentally verify a faithful hierarchy of genuine n-photon quantum non-Gaussian light. We conclusively witnessed three-photon quantum non-Gaussian light in the experiment. Measured data demonstrate a direct applicability of the hierarchy for a large class of real states.
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