Preface

Bagliani, Agostino Paravicini

doi:10.1515/9789048533312-001

Cited by 2 publications

(2 citation statements)

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“…Under certain assumptions the diamagnetic term can indeed be absorbed by a redefinition of the frequencies and polarizations of the field modes [15,75,93,94]. These redefinitions depend on the matter subsystem (more specifically the number of charged particles) and lead to the diamagnetic shift of the photon field which can be observed experimentally [98,127,128]. Since the difference between the bare and the diamagnetically-dressed photonic quantities go as N/V , where N is the total number of particles and V the quantization volume, it is often argued [93] that one can use the bare quantities for finite systems.…”

Section: Discussionmentioning

confidence: 98%

Relevance of the Quadratic Diamagnetic and Self-Polarization Terms in Cavity Quantum Electrodynamics

et al. 2020

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Experiments at the interface of quantum-optics and chemistry have revealed that strong coupling between light and matter can substantially modify chemical and physical properties of molecules and solids. While the theoretical description of such situations is usually based on non-relativistic quantum electrodynamics, which contains quadratic light-matter coupling terms, it is commonplace to disregard these terms and restrict to purely bilinear couplings. In this work we clarify the physical origin and the substantial impact of the most common quadratic terms, the diamagnetic and self-polarization terms, and highlight why neglecting them can lead to rather unphysical results. Specifically we demonstrate its relevance by showing that neglecting it leads to the loss of gauge invariance, basis-set dependence, disintegration (loss of bound states) of any system in the basis set-limit, unphysical radiation of the ground state and an artificial dependence on the static dipole. Besides providing important guidance for modeling strongly coupled light-matter systems, the presented results do also indicate under which conditions those effects might become accessible. * Electronic address: christian.schaefer@mpsd.mpg.de †

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Section: Discussionmentioning

confidence: 98%

Relevance of the Quadratic Diamagnetic and Self-Polarization Terms in Cavity Quantum Electrodynamics

et al. 2020

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“…Many works demonstrated how the hybridization with matter strongly alters not only the spectrum, but also the field profile [2][3][4], and the quantum [5][6][7][8] and nonlinear [9,10] properties of the photonic resonator. More recently interest has also broadened to investigate how strong coupling can be used to modify properties of the underlying matter degrees of freedom [11][12][13][14][15][16][17][18], including changes in electrical [19][20][21][22][23] and photochemical [24][25][26][27] properties.…”

Section: Introductionmentioning

confidence: 99%

Strong coupling of ionizing transitions

Cortese¹,

Carusotto²,

Colombelli³

et al. 2019

Optica

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We demonstrate that a ionising transition can be strongly coupled to a photonic resonance. The strong coupling manifests itself with the appearance of a narrow optically active resonance below the ionisation threshold. Such a resonance is due to electrons transitioning into a novel bound state created by the collective coupling of the electron gas with the vacuum field of the photonic resonator. Applying our theory to the case of bound-to-continuum transitions in microcavity-embedded doped quantum wells, we show how those strong-coupling features can be exploited as a novel knob to tune both optical and electronic properties of semiconductor heterostructures.

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Preface

Cited by 2 publications

References 0 publications

Relevance of the Quadratic Diamagnetic and Self-Polarization Terms in Cavity Quantum Electrodynamics

Relevance of the Quadratic Diamagnetic and Self-Polarization Terms in Cavity Quantum Electrodynamics

Strong coupling of ionizing transitions

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