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Decoherence is mostly detrimental in quantum information and quantum optics applications. However, the interplay between environment-induced incoherent dynamics and unitary evolution can give rise to novel quantum many-body phenomena that…

Quantum Physics · Physics 2026-05-28 Eric Sánchez-Llorente , Helmut Ritsch , Maria Moreno-Cardoner

A three-level atomic medium can be made transparent to a resonant probe field in the presence of a strong control field acting on an adjacent atomic transition to a long-lived state, which can be represented by a highly excited Rydberg…

Quantum Physics · Physics 2017-03-16 David Petrosyan

Two-dimensional molecular aggregate (2DMA), a thin sheet of strongly interacting dipole molecules self-assembled at close distance on an ordered lattice, is a fascinating fluorescent material. It is distinctively different from the single…

We discuss the basic properties of a recently proposed hybrid light-matter system of strongly interacting photons in an array of coupled cavities each doped with a single two level system. Using the non-linearity generated from the photon…

Quantum Physics · Physics 2008-03-13 Dimitris G. Angelakis , Sougato Bose , Alastair Kay , Marcelo F. Santos

Small form-factor, narrowband, and highly directive antennas are of critical importance in a variety of applications spanning wireless communications, remote sensing, Raman spectroscopy, and single photon emission enhancement. Surprisingly,…

The resonance energy and the transition rate of atoms, molecules and solids were understood as their intrinsic properties in classical electromagnetism. With the development of quantum electrodynamics, it is realized that these quantities…

Mesoscale and Nanoscale Physics · Physics 2020-05-07 Jason Horng , Yu-Hsun Chou , Tsu-chi Chang , Chu-Yuan Hsu , Tien-chang Lu , Hui Deng

A ring of sub-wavelength spaced dipole-coupled quantum emitters features extraordinary optical properties when compared to a one-dimensional chain or a random collection of emitters. One finds the emergence of extremely subradiant…

Quantum Physics · Physics 2023-02-28 Verena Scheil , Raphael Holzinger , Maria Moreno-Cardoner , Helmut Ritsch

Topological photonics provides a robust framework for strategically controlling light confinement and propagation dynamics. By exploiting the marriage between this notion and symmetry-constrained mode competition in an active setting, we…

Subwavelength atomic arrays offer a powerful platform for engineering cooperative light-matter interactions and enabling quantum metasurfaces. We demonstrate that a two-dimensional array of three-level atoms operating under…

Quantum Physics · Physics 2025-12-01 Shiwen Sun , Yi-Xin Wang , Xiao Liu , Yan Zhang

Resonant dipole-dipole interaction modifies the energy and decay rate of electronic excitations for finite one dimensional chains of ultracold atoms in an optical lattice. We show that collective excited states of the atomic chain can be…

Quantum Physics · Physics 2012-12-07 Hashem Zoubi , Helmut Ritsch

We consider the reflection of a photon by a two-level system in a quasi-one-dimensional waveguide. This is important in part because it forms the backdrop for more complicated proposals where many emitters are coupled to the waveguide:…

Optics · Physics 2024-12-18 Ben Lang , Edmund Harbord , Ruth Oulton

Strong light-induced interactions between atoms are known to cause nonlinearities at a few-photon level which are crucial for applications in quantum information processing. Compared to free space, the scattering and the light-induced…

Quantum Physics · Physics 2021-12-22 Artur Skljarow , Harald Kübler , Charles S. Adams , Tilman Pfau , Robert Löw , Hadiseh Alaeian

High refractive index dielectric spheres present remarkable light-scattering properties in the spectral range dominated by dipolar modes. However, most of these properties are absent for larger spheres under plane wave illumination. Here,…

Emission and absorption of light lie at the heart of light-matter interaction. Although emission and absorption rates are regarded as intrinsic properties of atoms and molecules, various ways to modify these rates have been sought in…

Quantum Physics · Physics 2023-02-27 Daeho Yang , Seung-hoon Oh , Junseok Han , Gibeom Son , Jinuk Kim , Junki Kim , Moonjoo Lee , Kyungwon An

Entangled photons are crucial for quantum technologies, but generating arbitrary entangled photon states deterministically, efficiently, and with high fidelity remains a challenge. Here, we demonstrate how hybridization and dipole-dipole…

Quantum Physics · Physics 2022-04-06 Derek S Wang , Inci Anali , Susanne F Yelin

The theory of inter-spin-subband electric dipole spin resonance in transition metal dichalcogenide heterobilayers is proposed. Our symmetry analysis demonstrates that, in contrast to monolayers, the reduced symmetry of heterobilayers…

Mesoscale and Nanoscale Physics · Physics 2026-05-21 K. K. Grigoryan , M. M. Glazov

Moir\'e lattices created in two-dimensional heterostructures exhibit rich many-body physics of interacting electrons and excitons and, at the same time, suggest promising optoelectronic applications. Here, we study the cooperative radiance…

Quantum Physics · Physics 2025-05-14 Jan Kumlin , Ajit Srivastava , Thomas Pohl

Light-matter interfaces are pivotal for quantum computation and communication. While typically analyzed using single-mode or open-quantum-system approximations, these models often neglect multi-mode field states and light-matter…

Quantum Physics · Physics 2026-02-06 Tejas Acharya , Loïc Lanco , Olivier Krebs , Hui Khoon Ng , Alexia Auffèves , Maria Maffei

Light modulation is an essential operation in photonics and optoelectronics. With existing and emerging technologies increasingly demanding compact, efficient, fast and broadband optical modulators, high-performance light modulation…

Optics · Physics 2016-05-04 Zhipei Sun , Amos Martinez , Feng Wang

We have developed a novel method to describe superradiance and related cooperative and collective effects in a closed form. Using the method we derive a two-atom master equation in which any complexity of atomic levels, semiclassical…

Quantum Physics · Physics 2007-05-23 S. F. Yelin , M. Kostrun , Tun Wang , M. Fleischhauer
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