Unknown

Dataset Information

0

Characterizing large-scale quantum computers via cycle benchmarking.


ABSTRACT: Quantum computers promise to solve certain problems more efficiently than their digital counterparts. A major challenge towards practically useful quantum computing is characterizing and reducing the various errors that accumulate during an algorithm running on large-scale processors. Current characterization techniques are unable to adequately account for the exponentially large set of potential errors, including cross-talk and other correlated noise sources. Here we develop cycle benchmarking, a rigorous and practically scalable protocol for characterizing local and global errors across multi-qubit quantum processors. We experimentally demonstrate its practicality by quantifying such errors in non-entangling and entangling operations on an ion-trap quantum computer with up to 10 qubits, and total process fidelities for multi-qubit entangling gates ranging from [Formula: see text] for 2 qubits to [Formula: see text] for 10 qubits. Furthermore, cycle benchmarking data validates that the error rate per single-qubit gate and per two-qubit coupling does not increase with increasing system size.

SUBMITTER: Erhard A 

PROVIDER: S-EPMC6877623 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC5259781 | biostudies-literature
| S-EPMC5849679 | biostudies-literature
| S-EPMC7329862 | biostudies-literature
| S-EPMC5530650 | biostudies-literature
| S-EPMC7910494 | biostudies-literature
| S-EPMC8555812 | biostudies-literature
| S-EPMC5301017 | biostudies-literature
| S-EPMC6346626 | biostudies-literature
| S-EPMC10630310 | biostudies-literature
| S-EPMC122533 | biostudies-literature