QUANTUM FIELDS ON DRIVEN PLASMONIC NANOSTRUCTURES

Novel quantum concepts acquire content not by representing new beables but through material-inferential relations between claims about them and other claims. Acceptance of quantum theory modifies other concepts in accordance with a pragmatist inferentialist account of how claims acquire content. Quantum theory itself introduces no new beables, but accepting it affects the content of claims about classical magnitudes and other beables unknown to classical physics: the content of a magnitude claim about a physical object is a function of its physical context in a way that eludes standard pragmatics but may be modeled by decoherence. Leggett’s proposed test of macro-realism illustrates this mutation of conceptual content. Quantum fields are not beables but assumables of a quantum theory we use to make claims about particles and non-quantum fields whose denotational content may also be certified by models of decoherence.

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Serum Albumins Guided Plasmonic Nanoassemblies with Opposite Chiralities

Soft Matter ◽

10.1039/d1sm00784j ◽

2021 ◽

Author(s):

Zhaoyi Wang ◽

Ningning Zhang ◽

Jincheng Li ◽

Jun Lu ◽

Li Zhao ◽

...

Keyword(s):

Human Serum Albumin ◽

Serum Albumin ◽

Human Serum ◽

Great Promise ◽

Plasmonic Nanostructures ◽

Serum Albumins ◽

Catalytic Applications

Chiral assemblies by combining natural biomolecules with plasmonic nanostructures hold great promise for plasmonic enhanced sensing, imaging, and catalytic applications. Herein, we demonstrate that human serum albumin (HSA) and porcine...

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Nonlinear Amplification of Chirality in Self-Assembled Plasmonic Nanostructures

ACS Nano ◽

10.1021/acsnano.1c01158 ◽

2021 ◽

Vol 15 (3) ◽

pp. 5715-5724

Author(s):

Mei Song ◽

Lianming Tong ◽

Shengli Liu ◽

Yaowen Zhang ◽

Junyu Dong ◽

...

Keyword(s):

Plasmonic Nanostructures ◽

Nonlinear Amplification ◽

Self Assembled ◽

Amplification Of Chirality

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Surface plasmon polariton–enhanced photoluminescence of monolayer MoS2 on suspended periodic metallic structures

Nanophotonics ◽

10.1515/nanoph-2020-0545 ◽

2020 ◽

Vol 10 (2) ◽

pp. 975-982

Author(s):

Huanhuan Su ◽

Shan Wu ◽

Yuhan Yang ◽

Qing Leng ◽

Lei Huang ◽

...

Keyword(s):

Surface Plasmon ◽

Surface Plasmon Polariton ◽

Plasmonic Nanostructures ◽

Metallic Nanoparticle ◽

Systematic Analysis ◽

Excitation Rate ◽

Matter Interaction ◽

Light Matter Interaction ◽

Plasmon Polariton ◽

Plasmonic Effects

AbstractPlasmonic nanostructures have garnered tremendous interest in enhanced light–matter interaction because of their unique capability of extreme field confinement in nanoscale, especially beneficial for boosting the photoluminescence (PL) signals of weak light–matter interaction materials such as transition metal dichalcogenides atomic crystals. Here we report the surface plasmon polariton (SPP)-assisted PL enhancement of MoS2 monolayer via a suspended periodic metallic (SPM) structure. Without involving metallic nanoparticle–based plasmonic geometries, the SPM structure can enable more than two orders of magnitude PL enhancement. Systematic analysis unravels the underlying physics of the pronounced enhancement to two primary plasmonic effects: concentrated local field of SPP enabled excitation rate increment (45.2) as well as the quantum yield amplification (5.4 times) by the SPM nanostructure, overwhelming most of the nanoparticle-based geometries reported thus far. Our results provide a powerful way to boost two-dimensional exciton emission by plasmonic effects which may shed light on the on-chip photonic integration of 2D materials.

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Ultra-high-Q resonances in plasmonic metasurfaces

Nature Communications ◽

10.1038/s41467-021-21196-2 ◽

2021 ◽

Vol 12 (1) ◽

Cited By ~ 2

Author(s):

M. Saad Bin-Alam ◽

Orad Reshef ◽

Yaryna Mamchur ◽

M. Zahirul Alam ◽

Graham Carlow ◽

...

Keyword(s):

Incident Light ◽

Reducing Power ◽

Field Enhancement ◽

Plasmonic Nanostructures ◽

High Q ◽

Alternative Material ◽

Order Of Magnitude ◽

Wavelength Scale ◽

Strong Confinement ◽

Sub Wavelength

AbstractPlasmonic nanostructures hold promise for the realization of ultra-thin sub-wavelength devices, reducing power operating thresholds and enabling nonlinear optical functionality in metasurfaces. However, this promise is substantially undercut by absorption introduced by resistive losses, causing the metasurface community to turn away from plasmonics in favour of alternative material platforms (e.g., dielectrics) that provide weaker field enhancement, but more tolerable losses. Here, we report a plasmonic metasurface with a quality-factor (Q-factor) of 2340 in the telecommunication C band by exploiting surface lattice resonances (SLRs), exceeding the record by an order of magnitude. Additionally, we show that SLRs retain many of the same benefits as localized plasmonic resonances, such as field enhancement and strong confinement of light along the metal surface. Our results demonstrate that SLRs provide an exciting and unexplored method to tailor incident light fields, and could pave the way to flexible wavelength-scale devices for any optical resonating application.

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Quantifying photoinduced carriers transport in exciton–polariton coupling of MoS2 monolayers

npj 2D Materials and Applications ◽

10.1038/s41699-021-00227-y ◽

2021 ◽

Vol 5 (1) ◽

Author(s):

Min-Wen Yu ◽

Satoshi Ishii ◽

Shisheng Li ◽

Ji-Ren Ku ◽

Jhen-Hong Yang ◽

...

Keyword(s):

Electronic Energy ◽

Plasmonic Nanostructures ◽

Transition Metal Dichalcogenide ◽

Metallic Nanoparticle ◽

Rabi Splitting ◽

One Dimensional ◽

Induced Dipole ◽

Mos2 Monolayers ◽

Plasmon Polaritons ◽

Significant Attention

AbstractExciton–polariton coupling between transition metal dichalcogenide (TMD) monolayer and plasmonic nanostructures generates additional states that are rich in physics, gaining significant attention in recent years. In exciton–polariton coupling, the understanding of electronic-energy exchange in Rabi splitting is critical. The typical structures that have been adopted to study the coupling are “TMD monolayers embedded in a metallic-nanoparticle-on-mirror (NPoM) system.” However, the exciton orientations are not parallel to the induced dipole direction of the NPoM system, which leads to inefficient coupling. Our proposed one-dimensional plasmonic nanogrooves (NGs) can align the MoS2 monolayers’ exciton orientation and plasmon polaritons in parallel, which addresses the aforementioned issue. In addition, we clearly reveal the maximum surface potential (SP) change on intermediate coupled sample by the photo-excitation caused by the carrier rearrangement. As a result, a significant Rabi splitting (65 meV) at room temperature is demonstrated. Furthermore, we attribute the photoluminescence enhancement to the parallel exciton–polariton interactions.

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A path integral formulation for particle detectors: the Unruh-DeWitt model as a line defect

Journal of High Energy Physics ◽

10.1007/jhep03(2021)076 ◽

2021 ◽

Vol 2021 (3) ◽

Author(s):

Ivan M. Burbano ◽

T. Rick Perche ◽

Bruno de S. L. Torres

Keyword(s):

Path Integral ◽

Degrees Of Freedom ◽

Wilson Line ◽

Transition Probability ◽

Relativistic Quantum ◽

Quantum Fields ◽

Line Defect ◽

Particle Detectors ◽

Nonlocal Operators ◽

Detector Model

Abstract Particle detectors are an ubiquitous tool for probing quantum fields in the context of relativistic quantum information (RQI). We formulate the Unruh-DeWitt (UDW) particle detector model in terms of the path integral formalism. The formulation is able to recover the results of the model in general globally hyperbolic spacetimes and for arbitrary detector trajectories. Integrating out the detector’s degrees of freedom yields a line defect that allows one to express the transition probability in terms of Feynman diagrams. Inspired by the light-matter interaction, we propose a gauge invariant detector model whose associated line defect is related to the derivative of a Wilson line. This is another instance where nonlocal operators in gauge theories can be interpreted as physical probes for quantum fields.

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