• Corpus ID: 251223676

Complete unitary qutrit control in ultracold atoms

@inproceedings{Lindon2022CompleteUQ,
  title={Complete unitary qutrit control in ultracold atoms},
  author={J Lindon and Arina Tashchilina and Logan W. Cooke and Lindsay J. LeBlanc},
  year={2022}
}

• J. Lindon, A. Tashchilina, +1 author L. LeBlanc
• Published 29 July 2022
• Physics

Physical quantum systems are commonly composed of more than two levels and offer the capacity to encode information in higher-dimensional spaces beyond the qubit, starting with the three-level qutrit. Here, we encode neutral-atom qutrits in an ensemble of ultracold 87 Rb and demonstrate arbitrary single-qutrit SU(3) gates. We generate a full set of gates using only two resonant microwave tones, including synthesizing a gate that effects a direct coupling between the two disconnected levels in the three-level Λ-scheme. Using two different gate sets, we implement and characterize the Walsh-Hadamard Fourier transform, and find similar final-state fidelity and purity from both approaches. This work establishes the ultracold neutral-atom qutrit as a promising platform for qutrit-based quantum information processing, extentions to d -dimensional qudits, and explorations in multilevel quantum state manipulations with nontrivial geometric phases.