In recent years, the architectures of quantum computers have been rapidly diversifying. Google continues to pursue superconducting qubits with stability, while Amazon has introduced Cat Qubits, and Microsoft has unveiled a Majorana-based quantum computer. Honeywell (Quantinuum) is advancing ion-trap technology, and in the field of neutral atoms, QuEra has demonstrated remarkable achievements. Additionally, PsiQuantum, whose future was once uncertain, is now investing enormous resources to develop a large-scale fusion-based photonic quantum computer.
Observing this trend, it is evident that the U.S. is not only refining existing architectures but also shifting toward next-generation models, unsatisfied with the current state of quantum computers. This shift is particularly notable as quantum computing progress is no longer following a "Moore’s Law"-like evolution but is instead driven by architectural diversification.
From my perspective, Cat Qubits and Majorana qubits, given their current scalability, may not become the mainstream. However, the continuous emergence of new quantum computing technologies is fascinating. It is especially significant that companies are seriously tackling technologies that were once considered difficult to realize.
On the other hand, in Japan, research and development mainly focus on conventional architectures. While refining existing technologies is essential, it would be great to see more companies and research institutions taking bold steps toward next-generation quantum computing. Unfortunately, such initiatives are still limited, which is somewhat disappointing.
Given this situation, at blueqat, we are starting to consider taking on the challenge of next-generation architectures that are said to be "impossible" Breaking away from conventional frameworks and exploring new possibilities might allow us to create a next-generation quantum computing technology that originates from Japan.
As global competition intensifies, Japan's quantum computing development must move to the next phase. If more efforts emerge to pursue both refinement of existing technologies and exploration of new architectures, it is possible that Japan-originated technologies could become the next standard. At blueqat, we also aim to push forward with technological development while keeping our eyes on the challenge of next-generation architectures.