China Focus: Scientists make breakthrough in scouting dark matter with quantum technique

This illustration shows the detection of spin interactions mediated by the hypothetical axion dark matter. HEFEI -- An international team led by Chinese scientists has employed cutting-edge quantum technology in a direct quest for the universe's most elusive matter, an extraordinary endeavor that has significantly advanced detection capabilities. Quantum precision measurement technology, which harnesses incredible properties like quantum spin and quantum entanglement, enables an ultra-sensitive detection of minuscule energy levels, offers a revolutionary approach in the search for the dark matter. Although the team has not yet discovered definitive proof of axion dark matter, they have placed the most stringent constraints ever known on neutron-neutron coupling that expands into the "axion window," a theoretically favored mass range where the hypothetical particles are likely to be hiding. The results highlight the vast potential of quantum technology in the realm of dark matter exploration, demonstrating the role of cutting-edge tech in advancing frontier science.