In this accessible talk (that will cover a wide range of topics),
I will start by briefly reviewing optical magnetometry with atoms and color
centers, and then move on to describe two new projects that are presently
being setup to attempt detection of dark-matter and dark-energy
constituents:
the Cosmic Axion Spin Precession experiment and the Global Network of
Optical Magnetometers for Exotic-physics searches. These are table-top-style
experiments based on zero-field nuclear magnetic resonance and modern atomic
sensors.