Preparation and characterization of arbitrary states of four-dimensional qudits based on biphotons

So Young Baek; Stanislav S. Straupe; Alexander P. Shurupov; Sergei P. Kulik; Yoon Ho Kim

doi:10.1103/PhysRevA.78.042321

Preparation and characterization of arbitrary states of four-dimensional qudits based on biphotons

So Young Baek, Stanislav S. Straupe, Alexander P. Shurupov, Sergei P. Kulik, Yoon Ho Kim

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

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.

Original language	English
Article number	042321
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	78
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevA.78.042321
Publication status	Published - 2008 Oct 22
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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AU - Kim, Yoon Ho

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