Reconstruction of the polarization states of a biphoton field
Yu. I. Bogdanov, R. F. Galeev, S. P. Kulik, Gleb Maslennikov, Ekaterina Moreva · Journal of Experimental and Theoretical Physics Letters · 2005
A method for reconstructing an arbitrary quantum state of an optical system in Hilbert space with dimension d = 4 is discussed. Such states can be realized using a collinear frequency-nondegenerate regime of generating spontaneous parametric down-conversion. The method has been tested for a number of polarization states of a biphoton field. The high accuracy of the reconstruction of the states (above 99%) indicates that the procedures proposed for reconstructing the quantum state of the system are adequate.