Efficiently improving the performance of noisy quantum computers
- Keysight Technologies Canada, Kanata, ON (Canada); Univ. of Waterloo, ON (Canada)
- University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- University of California, Berkeley, CA (United States)
- Keysight Technologies Canada, Kanata, ON (Canada)
Using near-term quantum computers to achieve a quantum advantage requires efficient strategies to improve the performance of the noisy quantum devices presently available. We develop and experimentally validate two efficient error mitigation protocols named "Noiseless Output Extrapolation" and "Pauli Error Cancellation" that can drastically enhance the performance of quantum circuits composed of noisy cycles of gates. By combining popular mitigation strategies such as probabilistic error cancellation and noise amplification with efficient noise reconstruction methods, our protocols can mitigate a wide range of noise processes that do not satisfy the assumptions underlying existing mitigation protocols, including non-local and gate-dependent processes. We test our protocols on a four-qubit superconducting processor at the Advanced Quantum Testbed. We observe significant improvements in the performance of both structured and random circuits, with up to 86 % improvement in variation distance over the unmitigated outputs. Our experiments demonstrate the effectiveness of our protocols, as well as their practicality for current hardware platforms.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 2440843
- Journal Information:
- Quantum, Journal Name: Quantum Vol. 8; ISSN 2521-327X
- Publisher:
- Quantum Science Open CommunityCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Error mitigation with Clifford quantum-circuit data
A volumetric framework for quantum computer benchmarks
Journal Article
·
Thu Nov 25 19:00:00 EST 2021
· Quantum
·
OSTI ID:1836985
A volumetric framework for quantum computer benchmarks
Journal Article
·
Sat Nov 14 19:00:00 EST 2020
· Quantum
·
OSTI ID:1725835