Measuring entangled qutrits and their use for quantum bit commitment

N. K. Langford, R. B. Dalton, M. D. Harvey, J. L. O'Brien, G. J. Pryde, A. Gilchrist, S. D. Bartlett, A. G. White

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324 Citations (Scopus)
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Entangled photonic qudits encoded in transverse spatial modes were characterized by using quantum state tomography. A technique for using this system to implement the best known bit commitment (BC) protocol was analyzed. It was observed that extremely high purities and fidelities were obtained for a range of single qubit states. It was found that the requirements on the initial two-qutrit entangled state were extremely stringent.

Original languageEnglish
Article number053601
JournalPhysical Review Letters
Issue number5
Publication statusPublished - 30 Jul 2004
Externally publishedYes


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