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We report on the observation of cooperative radiation of exactly two neutral atoms strongly coupled to the single mode field of an optical cavity, which is close to the lossless-cavity limit. Monitoring the cavity output power, we observe…

We experimentally investigate the spin dynamics of one and two neutral atoms strongly coupled to a high finesse optical cavity. We observe quantum jumps between hyperfine ground states of a single atom. The interaction-induced normal mode…

Quantum Physics · Physics 2009-09-22 M. Khudaverdyan , W. Alt , T. Kampschulte , S. Reick , A. Thobe , A. Widera , D. Meschede

We investigate the quantum interference effects of single photon transfer in two-atom cavity system caused by external excitation phase. In the proposed system, two identical atoms (with different positions in the optical cavity) are…

Quantum Physics · Physics 2017-06-28 Chun Xiao Zhou , Rui Zhang , Miao Di Guo , S. A. Moiseev , Xue Mei Su

We theoretically study the coupled modes of a medium-size quantum dot, which may confine a maximum of ten electron-hole pairs, and a single photonic mode of an optical microcavity. Ground-state and excitation energies, exciton-photon mixing…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Herbert Vinck , Boris A. Rodriguez , Augusto Gonzalez

Confining light in open structures is a long-sought goal in nanophotonics and cavity quantum electrodynamics. Embedded eigenstates provide infinite lifetime despite the presence of available leakage channels, but in linear time-invariant…

Quantum Physics · Physics 2018-05-10 Michele Cotrufo , Andrea Alù

We consider an atom inside a ring cavity, where a plane-wave cavity field together with an external coherent laser beam induces a two-photon Raman transition between two hyperfine ground states of the atom. This cavity-assisted Raman…

Quantum Gases · Physics 2015-05-28 Lin Dong , Chuanzhou Zhu , Han Pu

We model the equilibrium properties of a two-dimensional electron gas in a square lateral superlattice of quantum dots in a GaAs heterostructure subject to an external homogeneous perpendicular magnetic field and a far-infrared circular…

Coherent light-matter interactions between a quantum gas and light in a high-finesse cavity can drive self-ordering phase transitions. To date, such phenomena have involved exclusively single-atom coupling to light, resulting in coupled…

I analyze an all-optical switching scheme in a cavity QED system consisting of multiple three-level atoms confined in a cavity mode. A control laser coupled to the atoms from free space induces quantum interference in the coupled…

Optics · Physics 2010-03-23 Yifu Zhu

The problem of the complete transfer of quantum states and entanglement in a four qubits system composed of two single-mode cavities and two two-level atoms is investigated. The transfer of single and double excitation states is discussed…

Quantum Physics · Physics 2015-06-11 Smail Bougouffa , Zbigniew Ficek

We demonstrate condensate formation in a dark state in an ultracold quantum gas coupled to a high-finesse cavity and pumped by a shaken optical lattice. We show experimentally and theoretically that the atoms in the dark state display a…

We introduce an effective modes formalism to describe how the quasi-continuum of photonic modes in an optical cavity effectively behaves in the strong light-matter coupling regime of cavity quantum electrodynamics. By expressing these…

Optics · Physics 2025-04-08 Michael A. D. Taylor , Pengfei Huo

We study the dynamics of a quantum dot embedded in a three-dimensional microcavity in the strong coupling regime in which the quantum dot exciton has an energy close to the frequency of a confined cavity mode. Under the continuous pumping…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 J. I. Perea , D. Porras , C. Tejedor

Cycling processes are important in many areas of physics ranging from lasers to topological insulators, often offering surprising insights into dynamical and structural aspects of the respective system. Here we report on a quantum-nonlinear…

The ground state of a cavity-electron system in the ultrastrong coupling regime is characterized by the presence of virtual photons. If an electric current flows through this system, the modulation of the light-matter coupling induced by…

Quantum Physics · Physics 2019-05-16 Mauro Cirio , Nathan Shammah , Neill Lambert , Simone De Liberato , Franco Nori

We propose a method to generate nonclassical states of light in multimode microwave cavities. Our approach considers two-photon processes that take place in a system composed of two extended cavities and an ultrastrongly coupled…

Quantum Physics · Physics 2019-03-28 F. A. Cárdenas-López , G. Romero , L. Lamata , E. Solano , J. C. Retamal

We consider the coupling of light, via an optical cavity, to two-dimensional atomic arrays whose lattice spacing exceeds the wavelength of the light. Such 'superwavelength' spacing is typical of optical tweezer arrays. While subwavelength…

Quantum Physics · Physics 2023-12-19 Yakov Solomons , Inbar Shani , Ofer Firstenberg , Nir Davidson , Ephraim Shahmoon

Single photons and single-photon pairs, inherently nonclassical in their nature, are fundamental elements of quantum sciences and technologies. Here, we propose to realize the nonclassical correlated deterministic photon pairs at the…

Quantum Physics · Physics 2022-04-20 Zhong Peng , Yuangang Deng

We study single-photon transport in an array of coupled microcavities where two two-level atomic systems are embedded in two separate cavities of the array. We find that a single-photon can be totally reflected by a single two-level system.…

Quantum Physics · Physics 2009-11-13 Lan Zhou , H. Dong , Yu-xi Liu , C. P. Sun , Franco Nori

The interaction between molecular (atomic) electron(s) and the vacuum field of a reflective cavity generates a significant interest thanks to the rapid developments in nanophotonics. Such interaction which lies within the realm of cavity…

Chemical Physics · Physics 2019-05-22 Alexander Semenov , Abraham Nitzan