Quantum plasmonics get applied

Zhou, Zhang‐Kai; Liu, Jingfeng; Bao, Yanjun; Wu, Lin; Png, Ching Eng; Wang, Xuehua; Qiu, Cheng‐Wei

doi:10.1016/j.pquantelec.2019.04.002

Cited by 82 publications

(47 citation statements)

References 263 publications

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“…This can be used to enhance fluorescence, nonlinear optical emission, upconversion, or a Raman emission 2)Propagation of the plasmon in the case of an SPP offers the prospect of signal processing and new types of optical devices 3)The dependence of the interaction on the wavelength of the exciting radiation offers a means to achieve various kinds of spectral selectivity in a material or nanostructures …”

Section: Introductionmentioning

confidence: 99%

The Quest for Zero Loss: Unconventional Materials for Plasmonics

2019

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There has been an ongoing quest to optimize the materials used to build plasmonic devices: first the elements were investigated, then alloys and intermetallic compounds, later semiconductors were considered, and, most recently, there has been interest in using more exotic materials such as topological insulators and conducting oxides. The quality of the plasmon resonances in these materials is closely correlated with their structure and properties. In general gold and silver are the most commonly specified materials for these applications but they do have weaknesses. Here, it is shown how, in specific circumstances, the selection of certain other materials might be more useful. Candidate alternatives include TixN, VO2, Al, Cu, Al‐doped ZnO, and Cu–Al alloys. The relative merits of these choices and the many pitfalls and subtle problems that arise are discussed, and a frank perspective on the field is provided.

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Section: Introductionmentioning

confidence: 99%

The Quest for Zero Loss: Unconventional Materials for Plasmonics

2019

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“…It is well known that, when strong coupling appears between two resonant modes, a reversible exchange of energy between these modes will enable new hybrid modes with unique features [45][46][47]. Such modal strong coupling holds promising potential for quantum information processing and has been shown to be an efficient way to modulate the dephasing time, boost the Purcell effect, enhance water splitting, or improve energy transfer [48][49][50]. To achieve such modal strong coupling, generating two kinds of resonant modes that overlap each other in both spectrum and space is essential.…”

Section: Articlesmentioning

confidence: 99%

Integrating lattice and gap plasmonic modes to construct dual-mode metasurfaces for enhancing light–matter interaction

Xue

et al. 2021

Sci. China Mater.

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Photonic structures with optical resonances beyond a single controllable mode are strongly desired for enhancing light-matter interactions and bringing about advanced photonic devices. However, the realization of effective multimodal photonic structures has been restricted by the limited tunable range of mode manipulation, the spatial dispersions of electric fields or the polarization-dependent excitations. To overcome these limitations, we create a dualmode metasurface by integrating the plasmonic surface lattice resonance and the gap plasmonic modes; this metasurface offers a widely tunable spectral range, good overlap in the spatial distribution of electric fields, and polarization independence of excitation light. To show that such dual-mode metasurfaces are versatile platforms for enhancing lightmatter interactions, we experimentally demonstrate a significant enhancement of second-harmonic generation using our design, with a conversion efficiency of 1-3 orders of magnitude larger than those previously obtained in plasmonic systems. These results may inspire new designs for functional multimodal photonic structures.

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“…quantum decoherence, coherent connection between quantum nodes, and device scalability. To solve these problems, plasmonic systems emerge as a promising platform for future quantum technology [11][12][13]. First, due to its ability to concentrate light within ultra-small dimensions, plasmonic structures have gained notable reputations on constructing compact optoelectronic nanodevices with quantum features of photons, such as plasmonic quantum logic gates [14] and quantum interferometer [15].…”

Section: Introductionmentioning

confidence: 99%

Ultrastrong coupling in single plexcitonic nanocubes

et al. 2019

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Light-matter strong coupling is defined when the coupling strength exceeds the losses in the system, whereas ultrastrong coupling is not simply strong coupling with even larger coupling strength. Instead, ultrastrong coupling regime arises when the coupling strength is comparable to the transition frequency in the system. At present, ultrastrong light-matter interactions have been achieved in superconducting circuits, semiconductor polaritons, and organic molecules, where these systems are typically at the micrometer scale. In this work, we investigated ultrastrong coupling in a nanoparticle plexcitonic system, i.e. a single gold nanocube coated with quantum emitters and positioned on a gold film. We observed a normalized coupling rate η ~ 0.12 to the antenna mode in such coated nanocube-on-mirror (c-NCoM) configuration at the multilayer emitter level. In contrast to the gap mode that squeezes all the optical fields into the gap region, the antenna mode in c-NCoM provides multiple exterior hot spots at the upper corners of the nanocube, which can be exploited for qubit entanglement within a single nanocube. The concurrence between adjacent emitters is estimated up to 0.6. This theoretical study establishes a promising route toward building a scalable quantum network using single plexcitonic nanocubes as quantum nodes.

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Quantum plasmonics get applied

Cited by 82 publications

References 263 publications

The Quest for Zero Loss: Unconventional Materials for Plasmonics

The Quest for Zero Loss: Unconventional Materials for Plasmonics

Integrating lattice and gap plasmonic modes to construct dual-mode metasurfaces for enhancing light–matter interaction

Ultrastrong coupling in single plexcitonic nanocubes

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