Goos-Hänchen effect observed for focused x-ray beams under resonant mode excitation

Zhong, Qi; Melchior, Lars; Peng, Jichang; Huang, Qiushi; Wang, Zhanshan; Salditt, Tim

doi:10.1364/oe.25.017431

Cited by 2 publications

(1 citation statement)

References 38 publications

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“…In combination, our work connects phenomenological models in cavity QED to ab initio quantization, and shows that the input-output formalism can be applied in highly open systems such as the overlapping modes regime [67,[72][73][74][75], non-Hermitian photonics [76][77][78] or other platforms featuring significant leakage [79,80], and regimes of extreme light-matter coupling, such as the ultra-strong [37,81,82] or multi-mode strong coupling regime [50,83].…”

Section: Introductionmentioning

confidence: 89%

Ab InitioFew-Mode Theory for Quantum Potential Scattering Problems

Lentrodt

Evers

2020

Phys. Rev. X

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Few-mode models have been a cornerstone of the theoretical work in quantum optics, with the famous single-mode Jaynes-Cummings model being only the most prominent example. In this work, we develop ab initio few-mode theory, a framework connecting few-mode system-bath models to ab initio theory. We first present a method to derive exact few-mode Hamiltonians for non-interacting quantum potential scattering problems and demonstrate how to rigorously reconstruct the scattering matrix from such few-mode Hamiltonians. We show that upon inclusion of a background scattering contribution, an ab initio version of the well known input-output formalism is equivalent to standard scattering theory. On the basis of these exact results for non-interacting systems, we construct an effective few-mode expansion scheme for interacting theories, which allows to extract the relevant degrees of freedom from a continuum in an open quantum system. As a whole, our results demonstrate that few-mode as well as input-output models can be extended to a general class of problems, and open up the associated toolbox to be applied to various platforms and extreme regimes. We outline differences of the ab initio results to standard model assumptions, which may lead to qualitatively different effects in certain regimes. The formalism is exemplified in various simple physical scenarios. In the process we provide proof-of-concept of the method, demonstrate important properties of the expansion scheme, and exemplify new features in extreme regimes. *

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Section: Introductionmentioning

confidence: 89%

Ab InitioFew-Mode Theory for Quantum Potential Scattering Problems

Lentrodt

Evers

2020

Phys. Rev. X

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X-ray Focusing and Optics

Salditt

Osterhoff

2020

Topics in Applied Physics

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This chapter addresses fundamental concepts of X-ray optics and X-ray coherence, in view of the increasing number of X-ray applications requiring nano-focused X-ray beams. The chapter is meant as a tutorial to facilitate the understanding of later chapters of this book. After the introduction and an overview over focusing optics and recent benchmarks in X-ray focusing, we present refractive, reflective and diffractive X-ray optics in more detail. Particular emphasis is given to two kinds of X-ray optics which are particularly relevant for later chapters in this book, namely X-ray waveguides (XWG) and multilayer zone plates (MZP). Both are geared towards ultimate confinement and focusing, respectively, i.e. applications at the forefront of what is currently possible for multi-keV radiation. Since optics must be designed in view of coherence properties, we include a basic treatment of coherence theory and simulation for X-ray optics. Finally, the chapter closes with a brief outlook on compound (combined) optical schemes for hard X-ray microscopy.

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Goos-Hänchen effect observed for focused x-ray beams under resonant mode excitation

Cited by 2 publications

References 38 publications

Ab InitioFew-Mode Theory for Quantum Potential Scattering Problems

Ab InitioFew-Mode Theory for Quantum Potential Scattering Problems

X-ray Focusing and Optics

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