Toghrul Iskandarov
Quantum power parity is a strategic situation in which rival great powers, in this case the United States and China, have amassed quantum capabilities to the point that neither side can grant the other a decisive technological edge without either attaining a lasting advantage. In contrast to nuclear parity, which is kept at bay by transparent warhead counts, mutually assured destruction doctrine, and formal arms-control treaties like the Strategic Arms Limitation Talks (SALT) and the New START treaty, quantum parity is opaque and hidden by design, capabilities are a dual purpose, proliferate in civilian and commercial markets, and are not readily verifiable. This structural deviation has immediate implications for crisis stability.
When decision-makers cannot predictably evaluate the quantum posture of an adversary, it is reasonable to expect that the tight decision-making timelines and information asymmetries eroded by quantum sensing and computing would amplify the risk of miscalculation, preemptive action, and the attenuation of the gravity with which nuclear parity was historically maintained. The thesis of this article, thus, is that quantum power parity is a less stabilizing equilibrium than nuclear power parity, and that the comprehension of this gap is indispensable to the adoption of sound policy.