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Photonic crystal waveguides are known to support C-points - point-like polarisation singularities with local chirality. Such points can couple with dipole-like emitters to produce highly directional emission, from which spin-photon…

Optics · Physics 2016-07-27 Ben Lang , Daryl M. Beggs , Ruth Oulton

We study the coherent transport of one or two photons in a 1D waveguide chirally coupled to a nonlinear resonator. Analytic solutions of the one-photon and two-photon scattering is derived. Although the resonator acts as a non-reciprocal…

Quantum Physics · Physics 2022-08-10 Jin-Lei Tan , Xun-Wei Xu , Jing Lu , Lan Zhou

We investigate the effect of a direct current on propagating spin waves in a CoFeB/Ta bilayer structure. Using the micro-Brillouin light scattering technique, we observe that the spin wave amplitude may be attenuated or amplified depending…

The spatial separation of electron spins followed by the control of their individual spin dynamics has recently emerged as an essential ingredient in many proposals for spin-based technologies because it would enable both of the two spin…

We propose a new method to narrow the linewidth of entangled photons generated from spontaneous parametric down conversion (SPDC). An internal Bragg grating is incorporated onto a nonlinear optical crystal waveguide. We study theoretically…

Optics · Physics 2015-05-14 Li Yan , Lijun Ma , Xiao Tang

Single-mode high-index-contrast waveguides have been ubiquitously exploited in optical, microwave, and phononic structures for achieving enhanced wave-matter interactions. Although micro-scale optomechanical and electro-optical devices have…

Optics · Physics 2021-01-05 Na Zhu , Xufeng Zhang , Xu Han , Chang-Ling Zou , Hong X. Tang

Entangling gates for electron spins in semiconductor quantum dots are generally based on exchange, a short-ranged interaction that requires wavefunction overlap. Coherent spin-photon coupling raises the prospect of using photons as…

Mesoscale and Nanoscale Physics · Physics 2020-03-04 F. Borjans , X. G. Croot , X. Mi , M. J. Gullans , J. R. Petta

Optical emitters strongly coupled to photons propagating in one-dimensional waveguides are a promising platform for optical quantum information processing. Here, we present a theoretical study of the scattering of two indistinguishable…

Quantum Physics · Physics 2016-03-24 Alexandre Roulet , Huy Nguyen Le , Valerio Scarani

In this work we show that stationary light-matter excitations generated inside a hollow one-dimensional waveguide filled with atoms, can be made to generate a photonic two-component Lieb Liniger model. We explain how to prepare and drive…

Quantum Physics · Physics 2015-05-19 Dimitris G. Angelakis , Mingxia Huo , Elica Kyoseva , Leong Chuan kwek

We demonstrate theoretically that a coherent manipulation of electron spins in low-dimensional semiconductor structures with spin-orbit coupling by infrared radiation is possible. The proposed approach is based on using a dipole force…

Mesoscale and Nanoscale Physics · Physics 2010-09-28 E. Ya. Sherman , J. G. Muga , V. K. Dugaev , A. Ruschhaupt

Single photons enable the distribution of quantum information over large distances and thus play a major role in quantum technologies such as communication and computing. Solid-state emitters are practical and efficient sources of single…

We propose a practical and efficient solution for the coupling of light from integrated single-mode waveguides to supercollimating planar photonic crystals on conventional silicon-on-insulator platforms. The device consists of a rib…

Optics · Physics 2009-11-13 K. Vynck , E. Centeno , M. Le Vassor d'Yerville , D. Cassagne

Spin-orbit interaction of light can lead to the so-called optical mirages, i.e. a perceived displacement in the position of a particle due to the spiraling structure of the scattered light. In electric dipoles, the maximum displacement is…

Photons possess spin degree of freedom, corresponding to clockwise and counter clockwise rotating direction of the fields. Photon spin plays an important role in various applications such as optical communications, information processing…

We propose and analyze a microwave spin-photon interface based on a circular double quantum dot, inspired by recent experimental observations of anisotropic g-factors and ring states in InAs nanowires. We develop an effective theoretical…

Mesoscale and Nanoscale Physics · Physics 2026-03-26 Ferdinand Omlor , Florinda Viñas Boström , Martin Leijnse

Study of photonic spin-orbital interactions, which involves control of the propagation and spatial distributions of light with the polarization of electromagnetic fields, is not only important at the fundamental level but also has…

We investigate the single-photon propagation in the one-dimensional waveguide coupled to $N$ two-level atoms. For a waveguide coupled to $N$ distant atoms, the transparency can be induced by coherent interaction at resonance for an $even$…

Quantum Physics · Physics 2013-04-04 Wei-Bin Yan , Heng Fan

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

We investigate single photon generation from individual self-assembled InGaAs quantum dots coupled to the guided optical mode of a GaAs photonic crystal waveguide. By performing confocal microscopy measurements on single dots positioned…

Mesoscale and Nanoscale Physics · Physics 2012-05-08 A. Laucht , S. Pütz , T. Günthner , N. Hauke , R. Saive , S. Frédérick , M. Bichler , M. -C. Amann , A. W. Holleitner , M. Kaniber , J. J. Finley

The propagation of electrons and photons can respectively have the spin-momentum locking effect which correlates the spin with the linear momentum. For the surface electrons in three-dimensional topological insulators (TIs), their spin is…

Mesoscale and Nanoscale Physics · Physics 2018-02-07 Siyuan Luo , Li He , Mo Li