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Measuring entangled qutrits and their use for quantum bit commitment

Abstract

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.

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Physical Review Letters

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