Informal HEP Talk
Next-generation optical lattice clocks
The accuracy of atomic clocks has improved a thousandfold over the last 15 years. The latest generation of optical lattice clocks are accurate enough to measure general relativity's gravitational redshift at the centimeter scale, to test physics beyond the Standard Model, and to reveal new emergent properties of quantum materials. These clocks use extremely stable lasers to count the "ticks" of an optical-frequency transition in atoms cooled to the nanokelvin regime, reaching 18 digits of accuracy in a few hours. In this talk, I will discuss how we achieve record atom-light coherence through exquisite control of the quantum mechanical state of a clock composed of degenerate fermions in a three-dimensional optical lattice.