Multiple photon subtraction applied to a displaced phase-averaged coherent state, which is a non-Gaussian classical state, produces conditional states with a non trivial (positive) Glauber-Sudarshan P-representation. We theoretically and experimentally demonstrate that, despite its simplicity, this class of conditional states cannot be fully characterized by direct detection of photon numbers. In particular, the non-Gaussianity of the state is a characteristics that must be assessed by phase-sensitive measurements. We also show that the non-Gaussianity of conditional states can be manipulated by choosing suitable conditioning values and composition of phase-averaged states.
|Data di pubblicazione:||2014|
|Titolo:||Gaussian and Non-Gaussian operations on non-Gaussian state: engineering non-Gaussianity|
|Rivista:||QUANTUM MEASUREMENTS AND QUANTUM METROLOGY|
|Digital Object Identifier (DOI):||10.2478/qmetro-2014-0001|
|Codice identificativo Scopus:||2-s2.0-84960204101|
|Parole Chiave:||Photon statistics; Photon detectors; Quantum state characterization; State engineering|
|Appare nelle tipologie:||Articolo su Rivista|