Robust and Efficient High-Dimensional Quantum State Tomography.

  title={Robust and Efficient High-Dimensional Quantum State Tomography.},
  author={Markus Rambach and Mahdi Qaryan and Michael Kewming and Christopher Ferrie and Andrew G. White and Jacquiline Romero},
  journal={Physical review letters},
  volume={126 10},
The exponential growth in Hilbert space with increasing size of a quantum system means that accurately characterizing the system becomes significantly harder with system dimension d. We show that self-guided tomography is a practical, efficient, and robust technique of measuring higher-dimensional quantum states. The achieved fidelities are over 99.9% for qutrits (d=3) and ququints (d=5), and 99.1% for quvigints (d=20)-the highest values ever realized for qudit pure states. We also show… 

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