Quantum sensing with atom interferometry and atomic clocks

The best atomic clocks have stability corresponding to a loss of less than one second in the lifetime of the universe. Matter wave interferometers have achieved coherence times of seconds and atomic wavepacket separations on the meter-scale, resulting in a significant enhancement in accelerometer and gravity gradiometer sensitivity. The impressive precision of these sensors makes them a powerful tool for fundamental physics experiments, including searches for dark matter, tests for new forces, and studies of gravitational physics, as well as for practical applications in inertial sensing, navigation, and geodesy. I will discuss the common operating principles of clocks and atom interferometers, review the techniques used in state-of-the-art sensors, and describe a survey of several recent results and upcoming applications.