Operationalistic Orthogonality Condition for Single-Mode Biphotons (Qutrits)

Zhukov, A. A.; Maslennikov, G. A.; Chekhova, M. V.

Operationalistic Orthogonality Condition for Single-Mode Biphotons (Qutrits)

Authors

Zhukov, A. A.

Maslennikov, G. A.

Chekhova, M. V.

Description

An arbitrary polarization state of a single-mode biphoton is considered. The operationalistic criterion is formulated for the orthogonality og these states. It can be used to separate a biphoton with an arbitrary degree of polarization from a set of biphotons orthogonal to it. This is necessary fro the implementation of quantum cryptography protocol based on three-level systems. The experimental test of this criterion amounts to the observation of the anticorrelation effect for a biphoton with an arbitraty polarization state.
4 pages, 2 figures, 1 table