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 Prepresentation. 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.
Gaussian and non-Gaussian operations on non-Gaussian state : engineering non-Gaussianity / S. Olivares, A. Allevi, M. Bondani. - In: QUANTUM MEASUREMENTS AND QUANTUM METROLOGY. - ISSN 2299-114X. - 2:(2014 Mar), pp. 1-10. [10.2478/qmetro-2014-0001]
Gaussian and non-Gaussian operations on non-Gaussian state : engineering non-Gaussianity
S. OlivaresPrimo
;
2014
Abstract
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 Prepresentation. 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.File | Dimensione | Formato | |
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