Has NTT sparked the long-awaited quantum-computing revolution?

For the past decade, quantum computing has struggled to balance promise and practicality. While the world’s most advanced systems remain engineering marvels, they’re bedeviled by the same flaw: the fragility of qubits—the fundamental units of quantum data—and the delicate hardware required to control them. A single fluctuation, for example, can collapse a quantum state, invalidating a computation.

Most quantum systems also depend on large-scale refrigeration colder than deep space, with cryogenic racks that often occupy multiple rooms. Scaling quantum systems demands exponential increases in cost, energy, and environmental stability. So while the U.N. has designated 2025 as the International Year of Quantum Science and Technology, for all its scientific significance, quantum’s commercial