Instead of a total ban, a more strategic approach is to "slow ball" an adversary like China by providing them with just enough technology. This keeps them dependent on foreign suppliers and disincentivizes the massive state investment required to develop their own superior, independent solutions.

While Britain excels in quantum research and software, its progress is hindered by a critical weakness: a lack of domestic infrastructure for specialized hardware. The country remains overly reliant on foreign providers for essential components like ultra-cold refrigerators and quantum chip packaging, creating a significant strategic vulnerability.

As Silicon Valley startups increasingly adopt cheaper Chinese AI platforms, a political backlash is likely. The US government may block their use, citing national security risks and data privacy concerns, mirroring past restrictions on Chinese EVs and telecom hardware.

Dilution refrigerators for superconducting qubits can take 40 hours to cool, limiting researchers to one experiment per week. An innovation that cuts this time to 12 hours would enable daily experiments, dramatically accelerating a nation's R&D progress and creating a powerful strategic advantage.

China's heavy investment in quantum component manufacturing, like photonic integrated circuits (PICs), allows its researchers to go from idea to physical prototype in just two weeks. In the US, the same process can take 12-18 months, giving China a massive advantage in iteration speed and adaptability.

Echoing Don Valentine's VC wisdom that 'scarcity sparks ingenuity,' US restrictions on advanced chips are compelling Chinese firms to become hyper-efficient at optimizing older hardware. This necessity-driven innovation could allow them to build a more resilient and cost-effective AI ecosystem, posing a long-term competitive threat.

To accelerate progress and maintain a competitive lead over China, John Martinis's new company is partnering with Applied Materials. They are leveraging modern, 300mm semiconductor fabrication tools—which are restricted from China—to build next-generation quantum devices with higher quality and scalability.

Unlike semiconductors, where the U.S. has a substantial lead, quantum is a new field where the competitive moat is small. This creates a thin margin for error in industrial policy and R&D strategy, demanding a higher degree of precision from the outset.

The supply chain for today's quantum prototypes is globally distributed. The true geopolitical prize is to control the future, at-scale manufacturing ecosystem for fault-tolerant quantum computers—an arena where no nation currently has a decisive advantage.