Policy brief no.15 written within the Reconnect China Horizon Europe project deals with the intensifying global race to harness quantum science. Recognizing the strategic potential of quantum technology for economic, military, and scientific advancement, China is focusing on quantum breakthroughs as a way to shift the balance of power, especially in its competition with the United States. President Xi Jinping has emphasized the importance of scientific innovation, particularly in quantum fields, to fuel national development and ensure security. Chinese researchers, led by figures like Pan Jianwei, have made significant strides in quantum communication and computing. China is particularly advanced in quantum communication, building secure networks that use quantum key distribution (QKD), which is virtually unhackable. China has also launched quantum satellites, like Mozi and Jinan-1, to bolster its space-ground quantum network. Despite its achievements, China may face challenges in keeping up with competitors. The quantum industry lacks robust private investment and relies heavily on state support, while geopolitical tensions, particularly with the U.S., risk isolating China from essential technologies. The coming decade will be crucial as China continues to navigate these obstacles in its quest for quantum supremacy. Policy recommendations: Given the strategic reach and military potential of quantum technologies, and given the central role of the Party and state in the quantum industry in China, any European partnership with and investment in China should be scrutinized carefully Europe must keep up with quantum application developments and standardization so that it does not entirely rely on technology and norms developed by foreign powers in the future Europe may play a constructive role in preventing the fragmentation of norms between the US and China The policy brief is complemented by the relevant infographic (10.5281/zenodo.22555953).
Quantum computing represents a paradigm shift in computational capability with profound implications for global technological supremacy, economic competitiveness, and national security. This comprehensive survey synthesizes the current state of quantum computing development across major powers and introduces the Quantum Strategic Competitiveness Index (QSCI) as a novel analytical framework for quantifying national quantum capabilities. Through systematic analysis of publicly available data from government reports, research publications, and policy documents, we assess quantum competitiveness across five dimensions: investment intensity, research quality, innovation output, human capital, and implementation readiness. Our analysis reveals that China leads in absolute public investment (approximately $15 billion as reported by multiple sources [11,13]), while the United States maintains superiority in research quality (34% of top-cited papers [12]) and private sector engagement (44% of global funding [12]). The European Union demonstrates strong public-academic collaboration with over €11 billion committed [14, 15]. We provide rigorous mathematical foundations of quantum computing principles, analyze recent experimental achievements including Google's Willow processor achieving below-threshold error correction [4], and examine cryptographic vulnerabilities requiring immediate post-quantum migration. Economic impact analysis with uncertainty quantification projects quantum computing generating $950
This article examines the intensifying strategic competition between the United States and China across three interrelated domains of quantum technology: quantum computing, quantum sensing, and quantum communications. Drawing on a qualitative comparative case-study methodology and engaging with theoretical frameworks of techno-nationalism, great-power competition, and military innovation, the article argues that quantum technologies have transcended their origins as instruments of scientific discovery and are now emerging as critical vectors of national power. Quantum capabilities hold the potential to compromise existing encryption architectures, transform battlefield intelligence and surveillance, revolutionise secure command-and-control communications, and render certain conventional deterrent postures strategically vulnerable. The article analyses the strategic investments, institutional ecosystems, and policy architectures through which both states are mobilising quantum capabilities, and it assesses the implications for military advantage, nuclear deterrence, and strategic stability. It concludes that the quantum race introduces new forms of uncertainty and instability into an already fraught great-power relationship, and that the absence of governance mechanisms or confidence-building measures in this domain represents a significant gap in international security architecture. The article contributes to the growing literature on emerging technology and strategic competition by offering a comprehensive comparative assessment of quantum power in the context of U.S.-China rivalry.