Explore cutting-edge research on light new physics and high-frequency gravitational waves using atomic clocks in this 40-minute conference talk by Elina Fuchs from the University of Hannover. Delve into the fascinating world of quantum metrology and its unexpected applications in fundamental physics, ranging from dark matter searches to gravitational wave detection. Gain insights into the cross-disciplinary connections between optics, condensed matter, atomic physics, quantum information, particle physics, and gravitational physics. Discover how precision quantum sensors are revolutionizing our understanding of the universe and opening new avenues for scientific discoveries. Recorded as part of the Frontiers of Quantum Metrology conference at the Kavli Institute for Theoretical Physics, this talk offers a unique opportunity to learn about the latest advancements in quantum technology and its potential to unlock mysteries in fundamental physics.