Magic state cultivation on a superconducting quantum processor.

Magic state cultivation on a superconducting quantum processor reduces error by a factor of 40 and achieves a state fidelity of at least 0.9999(1).

• Why it matters: Fault-tolerant quantum computing requires non-Clifford gates, which are resource-intensive; cultivating magic states offers a more efficient alternative, but experimental validation has been challenging.
• What they did: The study implemented magic state cultivation, including code-switching into a surface code, and developed a fault-tolerant measurement protocol on a superconducting quantum processor, with about 8% success rate.
• The result: The results demonstrate that magic state cultivation can significantly reduce errors and attain very high fidelity, establishing it as a practical solution for overcoming key challenges in quantum computing.