One of the primary hurdles in achieving practical quantum computers is the notably brief duration for which qubits can retain information. Researchers at Princeton University in the United States have achieved a remarkable milestone by engineering a superconducting qubit with an exceptionally long coherence time, exceeding 1 millisecond. This achievement marks a threefold increase over the best laboratory-reported values and nearly a fifteenfold improvement compared to the industry benchmark, representing the most significant advancement in this area in over ten years. Leveraging this breakthrough, the team has successfully fabricated a functional quantum chip and rigorously tested its performance, paving the way for more effective error correction mechanisms and scalable quantum systems. The groundbreaking results were published in the prestigious journal Nature on the 5th.