A pioneering study, recently published in the esteemed journal Nature, unveils a significant advancement by a research team from Princeton University in the United States. Through innovative material applications, the team has dramatically enhanced the stability of superconducting qubits, achieving a quantum state retention time that surpasses 1 millisecond. This achievement marks a 10- to 15-fold improvement over the current mainstream technical standards, representing the most substantial progress in over a decade.

The research team substituted the traditionally used aluminum with metallic tantalum, a move aimed at minimizing energy loss. Additionally, they replaced conventional sapphire substrates with high-purity silicon, which significantly bolstered qubit stability and computational precision. Leveraging this novel qubit design, the researchers successfully constructed a fully functional quantum chip. They rigorously tested its performance, paving the way for efficient error correction and scalable system expansion.