Hardware-Efficient, Fault-Tolerant Quantum Computation with Rydberg Atoms

• DOI: 10.48550/arxiv.2105.13501
• Publication Date: 2021-01-01
• Authors: Iris Cong; Sheng-Tao Wang; Harry Levine; Mikhail D. Lukin; Alexander Keesling
• Keywords: Rydberg atom

Neutral atom arrays have recently emerged as a promising platform for quantum information processing. One important remaining roadblock the large-scale application of these systems is ability to perform error-corrected operations. To entangle qubits in systems, atoms are typically excited Rydberg states, which could decay or give rise various correlated errors that cannot be addressed directly through traditional methods fault-tolerant computation. In this work, we provide first complete characterization sources error neutral-atom computer and propose hardware-efficient, computation schemes mitigate them. Notably, develop novel distinctly efficient method address most associated with atomic states outside computational subspace. These advances allow us significantly reduce resource cost compared existing, general-purpose schemes. Our protocols can implemented near-term using state-of-the-art neutral platforms encoded both alkali alkaline-earth atoms.