A new critique in the scientific journal Nature is raising fresh questions about Microsoft's claimed quantum computing breakthrough last year, which underpinned the company's announcement this month that it will have a working quantum system by 2029.
Quantum computers could solve scientific and cybersecurity problems beyond the reach of conventional machines. They have become a priority for U.S. President Donald Trump's administration, which invested $2 billion in the field and this week set goals for a scientific quantum system by 2028.
