High-dimensional quantum states, or qudits, represent a promising resource in the quantum information field. Here we present the experimental generation of four-dimensional quantum states, or ququarts, encoded in the polarization and orbital angular momentum of a single photon. Our technique, based on the q-plate device, allows the ququart to be prepared and measured in all five mutually unbiased bases. We report the reconstruction of the four-dimensional density matrix through the tomographic procedure for different ququart states.
Experimental generation and characterization of single-photon hybrid ququarts based on polarization and orbital angular momentum encoding / E., Nagali; L., Sansoni; Marrucci, Lorenzo; Santamato, Enrico; F., Sciarrino. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - STAMPA. - 81:(2010), pp. 052317-1-052317-7. [10.1103/PhysRevA.81.052317]
Experimental generation and characterization of single-photon hybrid ququarts based on polarization and orbital angular momentum encoding
MARRUCCI, LORENZO;SANTAMATO, ENRICO;
2010
Abstract
High-dimensional quantum states, or qudits, represent a promising resource in the quantum information field. Here we present the experimental generation of four-dimensional quantum states, or ququarts, encoded in the polarization and orbital angular momentum of a single photon. Our technique, based on the q-plate device, allows the ququart to be prepared and measured in all five mutually unbiased bases. We report the reconstruction of the four-dimensional density matrix through the tomographic procedure for different ququart states.File | Dimensione | Formato | |
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