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

Neutral-atom arrays have recently emerged as a promising platform for quantum information processing. One important remaining roadblock for the large-scale application of these systems is the ability to perform error-corrected quantum operations. To entangle the qubits in these systems, atoms are ty...

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Veröffentlicht in:Physical review. X Jg. 12; H. 2; S. 021049
Hauptverfasser: Cong, Iris, Levine, Harry, Keesling, Alexander, Bluvstein, Dolev, Wang, Sheng-Tao, Lukin, Mikhail D.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: College Park American Physical Society 01.06.2022
Schlagworte:
Arrays
ATOMIC AND MOLECULAR PHYSICS
Computational efficiency
Data processing
Decay
Error analysis
Error correction
Error correction & detection
Fault tolerance
Hardware
Neutral atoms
optical pumping
Platforms
quantum algorithms
quantum computation
Quantum computers
Quantum computing
quantum gates
quantum information processing
Quantum phenomena
quantum protocols
Qubits (quantum computing)
Rydberg states
spontaneous emission
ISSN:2160-3308, 2160-3308
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Zusammenfassung:Neutral-atom arrays have recently emerged as a promising platform for quantum information processing. One important remaining roadblock for the large-scale application of these systems is the ability to perform error-corrected quantum operations. To entangle the qubits in these systems, atoms are typically excited to Rydberg states, which could decay or give rise to various correlated errors that cannot be addressed directly through traditional methods of fault-tolerant quantum computation. In this work, we provide the first complete characterization of these sources of error in a neutral-atom quantum computer and propose hardware-efficient, fault-tolerant quantum computation schemes that mitigate them. Notably, we develop a novel and distinctly efficient method to address the most important errors associated with the decay of atomic qubits to states outside of the computational subspace. These advances allow us to significantly reduce the resource cost for fault-tolerant quantum computation compared to existing, general-purpose schemes. Our protocols can be implemented in the near term using state-of-the-art neutral-atom platforms with qubits encoded in both alkali and alkaline-earth atoms.
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QuEra Computing
USDOE Office of Science (SC)
Amazon Web Services
SC0021013; DGE1745303
Army Research Office (ARO)
National Science Foundation (NSF)
Defense Advanced Research Projects Agency (DARPA)
Hertz Foundation
Paul and Daisy Soros Fellowship
ISSN:2160-3308
2160-3308
DOI:10.1103/PhysRevX.12.021049