Article ID Journal Published Year Pages File Type
7925286 Optics Communications 2018 6 Pages PDF
Abstract
We present a detailed method to prepare and characterize four-dimensional pure quantum states or ququarts using polarization and time-bin modes of a single-photon. In particular, we provide a simple method to generate an arbitrary pure ququart and fully characterize the state with quantum state tomography. We also verify the reliability of the recipe by showing experimental preparation and characterization of 20 ququart states in mutually unbiased bases. As qudits provide superior properties over qubits in many fundamental tests of quantum physics and applications in quantum information processing, the presented method will be useful for photonic quantum information science.
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Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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