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Towards a Fock‐States Tomographic Reconstruction
Author(s) -
Crispino M.,
Di Giuseppe G.,
De Martini F.,
Mataloni P.,
Kanatsoulis H.
Publication year - 2000
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/(sici)1521-3978(200005)48:5/7<589::aid-prop589>3.0.co;2-l
Subject(s) - direct conversion receiver , homodyne detection , quantum tomography , optical parametric oscillator , photon , fock state , physics , optics , picosecond , quantum optics , fock space , coherent states , laser , density matrix , local oscillator , two photon excitation microscopy , second harmonic generation , state (computer science) , quantum state , parametric statistics , quantum mechanics , quantum , computer science , algorithm , mathematics , statistics , fluorescence , phase noise
We present the experimental approach to the determination of the Fock‐States density matrix via the optical homodyne tomography. The single photon state is generated by Spontaneous Parametric Down Conversion (SPDC) in a nonlinear crystal pumped by the Second Harmonic of a picosecond dye laser. The fundamental frequency of the dye‐laser realizes the local oscillator for the homodyne measurement. In this paper we describe the experimental apparatus and discuss the possibility to realize the quantum tomography of the single‐photon state and, in the future, of the n‐photon state. The experimental determination of the field state prepared in a coherent state with different mean photon numbers is also presented.