Certified quantum gates
arXiv:2008.07493 · doi:10.1103/PhysRevA.102.022426
Abstract
High quality, fully-programmable quantum processors are available with small numbers (<1000) of qubits, and the scientific potential of these near term machines is not well understood. If the small number of physical qubits precludes practical quantum error correction, how can these error-susceptible processors be used to perform useful tasks? We present a strategy for developing quantum error detection for certain gate imperfections that utilizes additional internal states and does not require additional physical qubits. Examples for adding error detection are provided for a universal gate set in the trapped ion platform. Error detection can be used to certify individual gate operations against certain errors, and the irreversible nature of the detection allows a result of a complex computation to be checked at the end for error flags.
5 pages, 2 figures
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- High-fidelity gates with mid-circuit erasure conversion in a metastable neutral atom qubit
- Erasure conversion for fault-tolerant quantum computing in alkaline earth Rydberg atom arrays
- Quantum Error Correction with Metastable States of Trapped Ions Using Erasure Conversion
- High threshold codes for neutral atom qubits with biased erasure errors
- Demonstrating a long-coherence dual-rail erasure qubit using tunable transmons
- Suppressing Amplitude Damping in Trapped Ions: Discrete Weak Measurements for a Non-unitary Probabilistic Noise Filter
- Surface Code with Imperfect Erasure Checks
- Stabilizing Non-Abelian Topological Order against Heralded Noise via Local Lindbladian Dynamics
- Logical qubits with erasure conversion using metastable neutral atoms