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We experimentally study the interaction between a cold atom cloud and many longitudinal modes of a high quality Fabry-Perot cavity, by measuring signatures of collective light shifts in the cavity transmission spectrum of an optical…

A tapered optical nanofiber simultaneously used to trap and optically interface of cold atoms through evanescent fields constitutes a new and well controllable hybrid quantum system. The atoms are trapped in two parallel 1D optical lattices…

Quantum Physics · Physics 2010-10-25 Hashem Zoubi , Helmut Ritsch

Collective interaction of light with an atomic gas can give rise to superradiant instabilities. We experimentally study the sudden build-up of a reverse light field in a laser-driven high-finesse ring cavity filled with ultracold thermal or…

Quantum Physics · Physics 2007-05-23 S. Slama , S. Bux , G. Krenz , C. Zimmermann , Ph. W. Courteille

We propose a scheme for generating steady entanglement between two distant atomic qubits in the coupled-cavity system via laser cooling. With suitable choice of the laser frequencies, the target entangled state is the only ground state that…

Quantum Physics · Physics 2013-01-04 Li Tuo Shen , Xin Yu Chen , Zhen Biao Yang , Huai Zhi Wu , Shi Biao Zheng

Superconducting qubits coupled to electric or nanomechanical resonators display effects previously studied in quantum electrodynamics (QED) and extensions thereof. Here we study a driven qubit coupled to a low-frequency tank circuit with…

Superradiant laser, which exploits the clock transition of alkaline-earth-metal-like atoms to generate ultrastable light in the bad-cavity limit, has garnered much attention in the past few decades. Unlike their odd counterpart, the even…

Atomic Physics · Physics 2025-08-29 Guohui Dong , Yao Yao

We investigate ultra-cold fermions placed into an optical cavity and subjected to optical lattices which confine the atoms to ladder structures. A transverse running-wave laser beam induces together with the dynamical cavity field a…

Quantum Gases · Physics 2016-04-13 Ameneh Sheikhan , Ferdinand Brennecke , Corinna Kollath

We investigate a setup where a cloud of atoms is trapped in an optical lattice potential of a standing wave laser field which is created by retro-reflection on a micro-membrane. The membrane vibrations itself realize a quantum mechanical…

Quantum Physics · Physics 2010-08-31 K. Hammerer , K. Stannigel , C. Genes , P. Zoller , P. Treutlein , S. Camerer , D. Hunger , T. W. Haensch

We study an ultracold atom-cavity coupling system, which had been implemented in experiment to display weak light nonlinearity [S. Gupta \textit{et al}., Phys. Rev. Lett. \textbf{99}, 213601 (2007)]. The model is described by a…

Quantum Gases · Physics 2011-10-11 Lu Zhou , Han Pu , Keye Zhang , Xing-Dong Zhao , Weiping Zhang

Laser engineered exciton-polariton networks could lead to dynamically configurable integrated optical circuitry and quantum devices. Combining cavity optomechanics with electrodynamics in laser configurable hybrid designs constitutes a…

Optics · Physics 2021-02-17 P. Sesin , S. Anguiano , A. E. Bruchhausen , A. Lemaître , A. Fainstein

We quantify the entanglement generated between an atom and a laser pulse in free space. We find that the entanglement calculated using a simple closed-system Jaynes-Cummings Hamiltonian is in remarkable agreement with a full open-system…

Quantum Physics · Physics 2009-11-10 Andrew Silberfarb , Ivan H. Deutsch

The Rabi oscillations of a two-level atom illuminated by a laser on resonance with the atomic transition may be suppressed by the atomic motion through averaging or filtering mechanisms. The optical analogs of these velocity effects are…

Quantum Physics · Physics 2009-11-11 J. G. Muga , B. Navarro

This paper presents the nonlinear dynamics of laser cooled and trapped cesium atoms placed inside an optical cavity and interacting with a probe light beam slightly detuned from the 6S1/2(F=4) to 6P3/2(F=5) transition. The system exhibits…

Quantum Physics · Physics 2009-10-31 A. Lambrecht , E. Giacobino , J. M. Courty

We utilize multilevel atoms trapped in a driven resonant optical cavity to produce scalable multi-mode squeezed states for quantum sensing and metrology. While superradiance or collective dissipative emission by itself has been typically a…

Quantum Physics · Physics 2024-01-22 Bhuvanesh Sundar , Diego Barbarena , Ana Maria Rey , Asier Piñeiro Orioli

Coupled nanolasers are of growing interest for on-chip optical computation and data transmission, which requires an understanding of how lasers interact to form complex systems. The non-Hermitian interaction between two coupled resonators,…

We study the dynamics of atoms in optical traps when exposed to laser cooling light that induces light-assisted collisions. We experimentally prepare individual atom pairs and observe their evolution. Due to the simplicity of the system…

Atomic Physics · Physics 2015-06-17 P. Sompet , A. V. Carpentier , Y. H. Fung , M. McGovern , M. F. Andersen

We demonstrate that very few (1 to 3) quantum dots as a gain medium are sufficient to realize a photonic crystal laser based on a high-quality nanocavity. Photon correlation measurements show a transition from a thermal to a coherent light…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 S. Strauf , K. Hennessy , M. T. Rakher , Y. -S. Choi , A. Badolato , L. C. Andreani , E. L. Hu , P. M. Petroff , D. Bouwmeester

We show that a collection of two-level atoms in an optical cavity beyond the rotating wave approximation and in the dispersive and strong-coupling regime constitutes a nonlinear medium and is capable of generating squeezed state of light.…

Quantum Physics · Physics 2014-11-07 Aranya B. Bhattacherjee

Cavities play a fundamental role in wave phenomena from quantum mechanics to electromagnetism and dictate the spatiotemporal physics of lasers. In general, they are constructed by closing all "doors" through which waves can escape. We…

We analyze two configurations for laser cooling of neutral atoms whose internal states store qubits. The atoms are trapped in an optical lattice which is placed inside a cavity. We show that the coupling of the atoms to the damped cavity…

Quantum Physics · Physics 2009-11-10 A. Griessner , D. Jaksch , P. Zoller