Cavity QED with quantum gases: new paradigms in many-body physics

F Mivehvar, F Piazza, T Donner, H Ritsch - Advances in Physics, 2021 - Taylor & Francis
We review the recent developments and the current status in the field of quantum-gas cavity
QED. Since the first experimental demonstration of atomic self-ordering in a system …

The development of active optical clock

J Zhang, T Shi, J Miao, J Chen - AAPPS Bulletin, 2023 - Springer
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 …

Rugged mHz-linewidth superradiant laser driven by a hot atomic beam

H Liu, SB Jäger, X Yu, S Touzard, A Shankar… - Physical Review Letters, 2020 - APS
We propose a new type of superradiant laser based on a hot atomic beam traversing an
optical cavity. We show that the theoretical minimum linewidth and maximum power are …

Subradiant-to-subradiant phase transition in the bad cavity laser

A Shankar, JT Reilly, SB Jäger, MJ Holland - Physical Review Letters, 2021 - APS
We show that the onset of steady-state superradiance in a bad cavity laser is preceded by a
dissipative phase transition between two distinct phases of steady-state subradiance. The …

Continuous guided strontium beam with high phase-space density

CC Chen, S Bennetts, RG Escudero, B Pasquiou… - Physical Review …, 2019 - APS
A continuous guided atomic beam of Sr 88 with a phase-space density exceeding 10− 4 in
the moving frame and a flux of 3× 10 7 at. s− 1 is demonstrated. This phase-space density is …

Nanoscale coherent light source

R Holzinger, D Plankensteiner, L Ostermann… - Physical Review Letters, 2020 - APS
A laser is composed of an optical resonator and a gain medium. When stimulated emission
dominates mirror losses, the emitted light becomes coherent. We propose a new class of …

Spontaneously generated structured light in a coherently driven five-level M-type atomic system

M Abbas, U Saleem, Rahmatullah, YC Zhang, P Zhang - Physical Review A, 2024 - APS
We propose a scheme to analyze the generation and detection of optical vortices via
spontaneous emission spectra. We consider a five-level M-type atomic system that interacts …

An extremely bad-cavity laser

J Zhang, T Shi, J Miao, D Yu, J Chen - npj Quantum Information, 2024 - nature.com
Lasing in the bad-cavity regime has promising applications in quantum precision
measurement and frequency metrology due to the reduced sensitivity of the laser frequency …

[HTML][HTML] Superradiant lasing in inhomogeneously broadened ensembles with spatially varying coupling

A Bychek, C Hotter, D Plankensteiner… - Open Research …, 2021 - ncbi.nlm.nih.gov
Background: Theoretical studies of superradiant lasing on optical clock transitions predict a
superb frequency accuracy and precision closely tied to the bare atomic linewidth. Such a …

Azimuthally dependent spontaneous emission from a coherently microwave-field driven four-level atom-light coupling scheme

M Abbas, SH Asadpour, F Wang, HR Hamedi… - Chaos, Solitons & …, 2024 - Elsevier
We present a novel technique that makes use of vortex light beams for generating spatially
structured spontaneously emission in a atomic four-level configuration. This atomic …