Demonstration of quantum volume 64 on a superconducting quantum computing system

TL;DR

This paper reports achieving a quantum volume of 64 on a superconducting quantum computer by optimizing hardware and software, demonstrating progress towards larger, more reliable quantum systems.

Contribution

The paper demonstrates a significant increase in quantum volume through combined hardware improvements and software co-design, advancing scalable quantum computing.

Findings

Quantum volume of 64 achieved on superconducting system

Hardware and software co-optimization is essential for progress

Highlights the importance of hardware-software co-design in quantum computing

Abstract

We improve the quality of quantum circuits on superconducting quantum computing systems, as measured by the quantum volume, with a combination of dynamical decoupling, compiler optimizations, shorter two-qubit gates, and excited state promoted readout. This result shows that the path to larger quantum volume systems requires the simultaneous increase of coherence, control gate fidelities, measurement fidelities, and smarter software which takes into account hardware details, thereby demonstrating the need to continue to co-design the software and hardware stack for the foreseeable future.