Error mitigation increases the effective quantum volume of quantum computers

• URL: http://arxiv.org/abs/2203.05489v2
• Date: Fri, 15 Apr 2022 18:32:41 GMT
• Title: Error mitigation increases the effective quantum volume of quantum computers
• Authors: Ryan LaRose, Andrea Mari, Vincent Russo, Dan Strano, William J. Zeng
• Abstract summary: We show that error mitigation increases the effective quantum volume of several quantum computers. We encourage the adoption of quantum volume as a benchmark for assessing the performance of error mitigation techniques.
• Score: 1.0499611180329804
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum volume is a single-number metric which, loosely speaking, reports the number of usable qubits on a quantum computer. While improvements to the underlying hardware are a direct means of increasing quantum volume, the metric is "full-stack" and has also been increased by improvements to software, notably compilers. We extend this latter direction by demonstrating that error mitigation, a type of indirect compilation, increases the effective quantum volume of several quantum computers. Importantly, this increase occurs while taking the same number of overall samples. We encourage the adoption of quantum volume as a benchmark for assessing the performance of error mitigation techniques.

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