Over the last few years, optical atomic clocks have broken record after record in precision timekeeping. Atoms are cooled to ...

Optical lattice clocks are emerging timekeeping devices based on tens of thousands of ultracold atoms trapped in an optical lattice (i.e., a grid of laser light). By oscillating between two distinct ...

Whether you've recently gotten your hands on an antique grandfather clock or you've purchased a modern version for your home, the next step is to figure out where to place it. Grandfather clocks look ...

Physicists are preparing to test whether atomic clocks can experience quantum superposition, ticking faster and slower simultaneously. The concept merges principles from quantum mechanics and ...