Лаборатория Квантовой Информации

Лаборатория Квантовой Информации
и Квантовой Оптики

Наши публикации

S. S. Straupe, D. P. Ivanov, A. A. Kalinkin, I. B. Bobrov and S. P. Kulik,
«Angular Schmidt modes in spontaneous parametric down-conversion»,
Phys. Rev. A, 83(6), 060302(R) (2011).

We report a proof-of-principle experiment demonstrating that appropriately chosen set of Hermite-Gaussian modes constitutes a Schmidt decomposition for transverse momentum states of biphotons generated in the process of spontaneous parametric down-conversion. We experimentally realize projective measurements in the Schmidt basis and observe correlations between appropriate pairs of modes. We perform tomographical state reconstruction in the Schmidt basis, by direct measurement of single-photon density matrix eigenvalues.

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