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Atoms coupled to cavities provide an exciting playground for the study of fundamental interactions of atoms mediated through a common channel. Many of the applications of cavity-QED and cold-atom experiments more broadly, suffer from…

An optical cavity enhances the interaction between atoms and light, and the rate of coherent atom-photon coupling can be made larger than all decoherence rates of the system. For single atoms, this strong coupling regime of cavity quantum…

Quantum Physics · Physics 2007-11-10 Yves Colombe , Tilo Steinmetz , Guilhem Dubois , Felix Linke , David Hunger , Jakob Reichel

Hybrid systems of cold atoms and optical cavities are promising systems for increasing the stability of laser oscillators used in quantum metrology and atomic clocks. In this paper we map out the atom-cavity dynamics in such a system and…

An ideal superradiant laser on an optical clock transition of noninteracting cold atoms is predicted to exhibit an extreme frequency stability and accuracy far below mHz-linewidth. In any concrete setup sufficiently many atoms have to be…

Quantum Physics · Physics 2015-06-18 Thomas Maier , Sebastian Kraemer , Laurin Ostermann , Helmut Ritsch

We propose a minimalistic model to account for the main properties of a continuous superradiant laser, in which a beam of atoms crosses the mode of a high-finesse Fabry-Perot cavity, and collectively emits light into the cavity mode. We…

We study the collective motion of atoms confined in an optical lattice operating inside a high finesse ring cavity. A simplified theoretical model for the dynamics of the system is developed upon the assumption of adiabaticity of the atomic…

Quantum Physics · Physics 2009-11-10 Th. Elsaesser , B. Nagorny , A. Hemmerich

Strong coupling between atomic ensembles and high-quality optical cavities enables collective and nonlinear phenomena that are central to cavity quantum electrodynamics (cQED). Although many experiments have been performed on this topic,…

Strong coupling of photons and materials in semiconductor nanocavity systems has been investigated because of its potentials in quantum information processing and related applications, and has been testbeds for cavity quantum…

Other Condensed Matter · Physics 2015-05-13 M. Nomura , N. Kumagai , S. Iwamoto , Y. Ota , Y. Arakawa

We propose a novel scheme to generate the spin-orbit coupling for a condensate placed inside an optical cavity by using a standing wave and a traveling wave. It is shown that the interplay of the laser lights and the cavity gives rise to…

Quantum Gases · Physics 2014-04-23 Y. Deng , J. Cheng , H. Jing , S. Yi

We study the non-linear interaction of a cold sample of strontium-88 atoms coupled to a single mode of a low finesse optical cavity in the so-called bad cavity limit and investigate the implications for applications to laser stabilization.…

We observe vacuum Rabi splitting in a lossy nearly confocal cavity indicating the strong coupling regime, despite a weak single-atom single-mode coupling. Strong collective interaction manifests itself in the typical $\sqrt{N}$-dependence…

Quantum Gases · Physics 2011-11-30 A. Wickenbrock , P. Phoonthong , F. Renzoni

We demonstrate a method to obtain homogeneous atom-cavity coupling by selecting and keeping $^{87}$Rb atoms that are near maximally coupled to the cavity's standing-wave mode. We select atoms by imposing an AC Stark shift on the ground…

Quantum Physics · Physics 2021-04-06 Baochen Wu , Graham P. Greve , Chengyi Luo , James K. Thompson

Ultracold $^{87}$Rb atoms are delivered into a high-finesse optical micro-cavity using a translating optical lattice trap and detected via the cavity field. The atoms are loaded into an optical lattice from a magneto-optic trap (MOT) and…

Quantum Physics · Physics 2009-11-10 J. A. Sauer , K. M. Fortier , M. S. Chang , C. D. Hamley , M. S. Chapman

We experimentally demonstrate a ring geometry all-fiber cavity system for cavity quantum electrodynamics with an ensemble of cold atoms. The fiber cavity contains a nanofiber section which mediates atom-light interactions through an…

Quantum Physics · Physics 2017-02-27 S. K. Ruddell , K. E. Webb , I. Herrera , A. S. Parkins , M. D. Hoogerland

We investigate the transmission spectrum of an optical cavity coupled with four-level atoms. Multiple normal-mode splitting peaks of the strongly coupled atom-cavity system are obtained as single cavity mode couples three separated atomic…

Quantum Physics · Physics 2019-01-03 Zheng Tan , Liyong Wang , Min Liu , Yifu Zhu , Jin Wang , Mingsheng Zhan

We investigate the generation of entanglement (spin squeezing) in an optical-transition atomic clock through the coupling to a vacuum electromagnetic field that is enhanced by an optical cavity. We show that if each atom is prepared in a…

Quantum Physics · Physics 2017-11-22 Jiazhong Hu , Wenlan Chen , Zachary Vendeiro , Alban Urvoy , Boris Braverman , Vladan Vuletić

Macroscopic arrays of cold atoms trapped in optical cavities can reach the strong atom-light collective coupling regime thanks to the simultaneous interactions of the cavity mode with the atomic ensemble. In a recent work we reported a…

Quantum Physics · Physics 2020-12-02 Diego Barberena , Robert J. Lewis-Swan , Ana Maria Rey , James K. Thompson

Optical cavities are one of the best ways to increase atom-light coupling and will be a key ingredient for future quantum technologies that rely on light-matter interfaces. We demonstrate that traveling-wave "ring" cavities can achieve a…

Atomic Physics · Physics 2018-09-24 Kevin C. Cox , David H. Meyer , Nathan A. Schine , Fredrik K. Fatemi , Paul D. Kunz

Prospects for reaching persistent entanglement between two spatially separated atomic Bose-Einstein condensates are outlined. The system set-up comprises of two condensates loaded in an optical lattice, which, in return, is confined within…

Quantum Physics · Physics 2015-08-05 Chaitanya Joshi , Jonas Larson

A promising approach to merge atomic systems with scalable photonics has emerged recently, which consists of trapping cold atoms near tapered nanofibers. Here, we describe a novel technique to achieve strong, coherent coupling between a…

Quantum Physics · Physics 2015-06-03 D. E. Chang , L. Jiang , A. V. Gorshkov , H. J. Kimble