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It is shown that in a double-cavity, two-dimensional electron waveguide, the interplay between quasi-bound states of each cavity leads to the appearance of bound states in continuum for certain distances between the cavities. These bound…

Quantum Physics · Physics 2013-05-29 Kyungsun Na , Gonzalo Ordonez , Sungyun Kim

Semiconductor quantum dots embedded in photonic-crystal nanostructures have been the subject of intense study. In this context, quantum dots are often considered to be simple two-level emitters, i.e., the complexities arising from the…

Mesoscale and Nanoscale Physics · Physics 2016-02-17 Kristian Høeg Madsen , Tau Bernstorff Lehmann , Peter Lodahl

This work introduces a theoretical framework to model the collective dynamics of quantum emitters in highly non-Markovian environments, interacting through the exchange of photons with significant retardations. The formalism consists on a…

Quantum Physics · Physics 2026-01-09 Carlos Barahona-Pascual , Hong Jiang , Alan C. Santos , Juan José García-Ripoll

We study the multi-channel quantum routing of the single photons in a waveguide-emitter system. The channels are composed by the waveguides and are connected by intermediate two-level emitters. By adjusting the intermediate emitters, the…

Quantum Physics · Physics 2014-04-30 Wei-Bin Yan , Heng Fan

Quantum mechanical treatment of light inside dielectric media is important to understand the behavior of an optical system. In this paper, a two-level atom embedded in a rectangular waveguide surrounded by a perfect electric conductor is…

Quantum Physics · Physics 2016-11-25 Moochan B. Kim , Georgios Veronis , Tae-Woo Lee , Hwang Lee , Jonathan P. Dowling

Photonic states with large and fixed photon numbers, such as Fock states, enable quantum-enhanced metrology but remain an experimentally elusive resource. A potentially simple, deterministic and scalable way to generate these states…

Quantum Physics · Physics 2019-04-17 V. Paulisch , M. Perarnau-Llobet , A. González-Tudela , J. I. Cirac

Quantum information is typically encoded in the state of a qubit that is decoupled from the environment. In contrast, waveguide quantum electrodynamics studies qubits coupled to a mode continuum, exposing them to a loss channel and causing…

Photonic state engineering in waveguide QED is typically based on local light-matter interactions. This limits its control over the spatial structure of bound photonic states. Here, we demonstrate a distinct mechanism arising from the…

Quantum Physics · Physics 2026-04-17 Mingzhu Weng , Gang Wang , Zhihai Wang

Here we introduce and study a photonic analogue of the Kondo model. The model is defined as a far detuned regime of photonic scattering off a three-level emitter in a $\Lambda$-type configuration coupled to a one-dimensional transmission…

Quantum Physics · Physics 2017-04-26 Mikhail Pletyukhov , Niclas Müller , Vladimir Gritsev

Integrated quantum photonics hold the promise to scale up the system size and form an on-chip quantum network with distributed information processing and simulation units. An outstanding need of such quantum network is to have high fidelity…

Quantum Physics · Physics 2019-08-13 Zhaohua Tian , Pu Zhang , Xue-Wen Chen

Quantum emitters trapped near photonic crystal waveguides have recently emerged as an exciting platform for realizing novel quantum matter-light interfaces. Here we study tunable photon scattering in a photonic crystal waveguide coupled to…

Quantum Physics · Physics 2025-02-14 Guo-Zhu Song , Lin-Xiong Wang , Jing-Xue Zhang , Hai-Rui Wei

Microwave dressed states are found to emerge within the superconducting condensate when coupled to a quantized electromagnetic field due to photon-Cooper pair entanglement. The renormalized energy separation between these states exceeds the…

Superconductivity · Physics 2026-02-24 Anoop Dhillon , A. Hamed Majedi

We show the propagation of entangled states of high-dimensional quantum systems. The qudits states were generated using the transverse correlation of the twin photons produced by spontaneous parametric down-conversion. Their free-space…

Quantum Physics · Physics 2009-11-13 G. Lima , Leonardo Neves , Ivan F. Santos , J. G. Aguirre Gómez , C. Saavedra , S. Pádua

We demonstrate the resonant excitation of two quantum dots in a photonic integrated circuit for on-chip single-photon generation in multiple spatial modes. The two quantum dots are electrically tuned to the same emission wavelength using a…

In this work, we experimentally and theoretically study the dressed-state emission of the biexciton-exciton cascade in a semiconductor quantum dot under pulsed, resonant, two-photon excitation. Building on the well-characterized…

Topological insulators feature a number of topologically protected boundary modes linked to the value of their bulk invariant. While in one-dimensional systems the boundary modes are zero dimensional and localized, in two-dimensional…

Quantum Physics · Physics 2023-08-21 Carlos Vega , Diego Porras , Alejandro González-Tudela

Bound states of massive particles, such as nuclei, atoms or molecules, constitute the bulk of the visible world around us. In contrast, photons typically only interact weakly. We report the observation of traveling three-photon bound states…

We investigate the spontaneous emission of a two-level system, e.g. an atom or atomlike object, coupled to a single-end, i.e., semi-infinite, one-dimensional photonic waveguide such that one end behaves as a perfect mirror while light can…

Quantum Physics · Physics 2013-01-23 T. Tufarelli , F. Ciccarello , M. S. Kim

We investigate the creation and control of emergent collective behavior and quantum correlations using feedback in an emitter-waveguide system using a minimal model. Employing homodyne detection of photons emitted from a laser-driven…

Quantum Physics · Physics 2021-09-29 Giuseppe Buonaiuto , Federico Carollo , Beatriz Olmos , Igor Lesanovsky

We investigate the formation of photon bound states in a system of interacting photons inside nanoscale wires. The photons interact through the exchange of vibrational modes induced along the waveguide mainly due to radiation pressure. The…

Quantum Physics · Physics 2022-01-04 Hashem Zoubi