Experimental preparation and characterization of four-dimensional quantum states using polarization and time-bin modes of a single photon

Jinwon Yoo, Yujun Choi, Young Wook Cho, Sang Wook Han, Sang Yun Lee, Sung Moon, Kyunghwan Oh, Yong Su Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)30-35
Number of pages6
JournalOptics Communications
Publication statusPublished - 2018 Jul 15


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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