98 citations · 158 across the 3 of their papers we have counts for
7 papers · 1 filter
Characterization of Spectral Entanglement of Spontaneous Parametric-Down Conversion Biphotons
G. Brida, V. Caricato, M. Genovese +3
We verified operational approach based on direct measurement of entanglement degree for bipartite systems. In particular spectral distributions of single counts and coincidence for…
Optimal protocol for quantum state tomography
E. V. Moreva, Yu. I. Bogdanov, A. K. Gavrichenko +2
We develop a practical quantum tomography protocol and implement measurements of pure states of ququarts realized with polarization states of photon pairs (biphotons). The method i…
Anisotropically high entanglement of biphotons generated in spontaneous parametric down conversion
M. V. Fedorov, M. A. Efremov, P. A. Volkov +3
We show that the wave packet of a biphoton generated via spontaneous parametric down conversion is strongly anisotropic. Its anisotropic features manifest themselves very clearly i…
Realization of four-state qudits using biphotons
E. V. Moreva, G. A. Maslennikov, S. S. Straupe +1
The novel experimental realization of four-level optical quantum systems (ququarts) is presented. We exploit the polarization properties of frequency non-degenerate biphoton field…
Qutrit state engineering with biphotons
Yu. Bogdanov, M. Chekhova, S. Kulik +4
The novel experimental realization of three-level optical quantum systems is presented. We use the polarization state of biphotons to generate a specific sequence of states that ar…
Orthogonality of Biphoton Polarization States
M. V. Chekhova, L. A. Krivitsky, S. P. Kulik +1
Orthogonality of two-photon polarization states belonging to a single frequency and spatial mode is demonstrated experimentally, in a generalization of the well-known anti-correlat…