Лаборатория Квантовой Информации

Лаборатория Квантовой Информации
и Квантовой Оптики

Наши публикации

S.-Y. Baek, S. S. Straupe, A. P. Shurupov, S. P. Kulik and Y.-H. Kim,
«Preparation and characterization of arbitrary states of four-dimensional qudits based on biphotons»,
Phys. Rev. A, 78(4), 042321 (2008).

We report interferometric schemes to prepare arbitrary states of four-dimensional qudits (ququarts) based on biphoton states of ultrafast-pumped frequency-nondegenerate spontaneous parametric down conversion. Preparation and tomographic characterization of a few examples of general single-ququart states, a pure state, a mixed state (fully diagonal), and a mixed state (partially coherent), are experimentally demonstrated.

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