The atomic clocks, whether operating at optical or microwave region, can be divided into two
categories according to their working mode, namely the passive clocks and active clocks …

Superradiance is a fundamental collective effect where radiation is amplified by the
coherence of multiple emitters. Superradiance plays a prominent role in optics (where it …

Abstract In conventional Bardeen–Cooper–Schrieffer superconductors, electrons with
opposite momenta bind into Cooper pairs due to an attractive interaction mediated by …

The application of masers is limited by its demanding working conditions (high vacuum or
low temperature). A room-temperature solid-state maser is highly desirable, but the lifetimes …

We experimentally study the relaxation oscillations and amplitude stability properties of an
optical laser operating deep into the bad-cavity regime using a laser-cooled Rb 87 Raman …

We theoretically study a superradiant laser, deriving both the steady-state behaviors and
small-amplitude responses of the laser's atomic inversion, atomic polarization, and light field …

We study the nondemolition mapping of collective quantum coherence onto a cavity light
field in a superradiant, cold-atom 87 Rb Raman laser. We show theoretically that the …

We develop a stochastic mean-field theory to describe active frequency measurements of
pulsed superradiant emission, studied in a recent experiment with strontium-87 atoms …

We study electromagnetically induced transparency (EIT) in a heated potassium vapor cell,
using a simple optical setup with a single free-running diode laser and an acousto-optic …

Laser-cooled gases of atoms interacting with the field of an optical cavity are a powerful tool
for quantum sensing and the simulation of open and closed quantum systems. They can …