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Quantum routing of single photons in a system with two waveguides coupled to two whispering-gallery resonators (WGRs) are investigated theoretically. With a real-space full quantum theory, photonic scattering amplitudes along four ports of…

Quantum Physics · Physics 2017-11-10 Jin-Song Huang , Jia-Hao Zhang , L. F. Wei

We investigate the scattering processes of two photons in a one-dimensional waveguide coupled to two giant atoms. By adjusting the accumulated phase shifts between the coupling points, we are able to effectively manipulate the…

Quantum Physics · Physics 2024-03-01 Wenju Gu , Lei Chen , Zhen Yi , Sujing Liu , Gao-xiang Li

The coupling of atomic arrays and one-dimensional subwavelength waveguides gives rise to in- teresting photon transport properties, such as recent experimental demonstrations of large Bragg reflection and paves the way for a variety of…

Hollow-core photonic-crystal waveguides filled with cold atoms can support giant optical nonlinearities through nondispersive propagation of light tightly confined in the transverse direction. Here we explore electromagnetically induced…

Quantum Physics · Physics 2011-03-09 Ephraim Shahmoon , Gershon Kurizki , Michael Fleischhauer , David Petrosyan

Controlling light photon-by-photon is central to quantum optics. At a fundamental level, photon interactions are mediated by their coupling to atoms, and ultimate control requires deterministic light-matter interfacing of single photons to…

We study a single photon transmission through 1D N- qubit chain. The qubits are supposed to be identical with equal distance between neighbors. We express the transfer matrix of N- qubit chain in terms of Chebyshev polynomials, which allows…

Mesoscale and Nanoscale Physics · Physics 2021-02-16 Ya. S. Greenberg , A. A. Shtygashev , A. G. Moiseev

We study the transverse-size effect of a quasi-one-dimensional rectangular waveguide on the single-photon scattering on a two-level system. We calculate the transmission and reflection coefficients for single incident photons using the…

Quantum Physics · Physics 2013-08-09 Jin-Feng Huang , Tao Shi , C. P. Sun , Franco Nori

This review describes the emerging field of waveguide quantum electrodynamics (WQED) concerned with the interaction of photons propagating in a waveguide with localized quantum emitters. The collective emitter-photon interactions can lead…

Systems of atoms coupled to a single or few waveguide modes provide a testbed for physically and practically interesting interference effects. We consider the dynamics of a pair of atoms, approximated as two-level quantum emitters, coupled…

Quantum Physics · Physics 2018-12-18 Paolo Facchi , Saverio Pascazio , Francesco V. Pepe , Domenico Pomarico

We study the transport of a single photon in two coupled one-dimensional semi-infinite coupled-resonator waveguides (CRWs), in which both end sides are coupled to a dissipative cavity. We demonstrate that a single photon can transfer from…

Quantum Physics · Physics 2017-06-14 Xun-Wei Xu , Ai-Xi Chen , Yong Li , Yu-xi Liu

We describe the coupling of moving atoms to a one dimensional photonic waveguide in the regime where the atomic velocities are comparable to the effective speed of light. Such conditions could be achieved, for example, in photonic crystals…

Quantum Physics · Physics 2017-04-19 Giuseppe Calajo , Peter Rabl

We propose and investigate a new type of optical waveguide made by an array of atoms without involving conventional Bragg scattering or total internal reflection. A finite chain of atoms collectively coupled through their intrinsic…

Mesoscale and Nanoscale Physics · Physics 2016-08-02 Siu-Tat Chui , Shengwang Du , Gyu-Boong Jo

We investigate the coherent single photon scattering process in a topological waveguide coupled with a driven $\Lambda$ system. We derive an analytical expression for transmittance by using the scattering formalism for three different…

Quantum Physics · Physics 2025-08-15 Gunjan Yadav , Madan Mohan Mahana , Tarak Nath Dey

We discuss the scattering of photons from a three-level emitter in a one-dimensional waveguide, where the transport is governed by the interference of spontaneously emitted and directly transmitted waves. The scattering problem is solved in…

Quantum Physics · Physics 2010-11-15 D. Witthaut , A. S. Sorensen

The single-photon scattering in a rectangular waveguide by a V-type three-level emitter is studied for large range of input-photon energy beyond the single-mode region. By using Lippmann-Schwinger formalism, the necessary and sufficient…

Quantum Physics · Physics 2020-12-30 Ya-Ju Song , Lei Qiao , Chang-Pu Sun

We propose a scheme to achieve efficient frequency conversion for a single photon propagating in a 1D conventional waveguide by exploiting the quantum interference induced by the scale of a V-type giant atom (GA) characterized by the…

Quantum Physics · Physics 2025-12-09 Ge Sun , Hongzheng Wu , Jing Lu , Lan Zhou

We investigate the single photon scattering by an emitter chirally coupled to a one-dimensional waveguide. The single-photon transport property is essentially different from the symmetrical coupling case. The single photons propagating…

Quantum Physics · Physics 2018-11-07 Wei-Bin Yan , Wei-Yuan Ni , Jing Zhang , Feng-Yang Zhang , Heng Fan

At the first glance, the expression "transparent superconductor" may seem an oxymoron. Still, the first principle calculations and experiments show that the materials that behave as superconductors at low frequencies and do not absorb in…

Quantum Physics · Physics 2019-02-20 V. M. Akulin

Local control of the generation and interaction of indistinguishable single photons is a key requirement for photonic quantum networks. Waveguide-based architectures, in which embedded quantum emitters act as both highly coherent single…

We investigate single-photon scattering in a waveguide-QED setup, where a giant molecule composed of two frequency-detuned giant atoms is coupled to two parallel waveguides via multiple connection points. The competition between coherent…

Quantum Physics · Physics 2026-05-07 Ze-Quan Zhang , Guang-Zheng Ye , Wei-Xin Chen , Yong Li , Huaizhi Wu