Explore the frontiers of quantum metrology in this 36-minute conference talk by Morgan Mitchell from ICFO. Delve into the quantum limits of field sensing using both ordinary and ultracold matter, presented as part of the "Frontiers of Quantum Metrology" conference at the Kavli Institute for Theoretical Physics. Gain insights into the latest advancements in quantum sensors and their applications in fundamental physics, including dark matter searches and gravitational wave detection. Discover unexpected connections between quantum metrology methods and diverse fields of physics, bridging optics, condensed matter, atomic physics, quantum information, particle physics, and gravitational physics. Learn how this interdisciplinary approach is fostering new scientific discoveries and collaborations between theorists and experimentalists across various research areas.