Hybrid photonic-plasmonic nano-cavity with ultra-high Q/V

Zhang, Hongyu; Liu, Yong-Chun; Wang, Chenyang; Zhang, Nianen; Lu, Cuicui

doi:10.1364/ol.402781

Cited by 33 publications

(41 citation statements)

References 35 publications

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“…This is essentially distinguishing from the accidental combination of CPB and UPB in the reciprocal regime. Furthermore, one can verify that the UPB condition in the reciprocal regime requires G 1 < −50meV, which is hard to reach in the existing nanophotonic structures [18,25,28,42]. While in the quasichiral regime, we show that the UPB can achieve with lower modes coupling, such as G 1 ≈ −27meV.…”

Section: Discussionmentioning

confidence: 75%

Single-photon blockade in quasichiral atom-photon interaction: Simultaneous high purity and high efficiency

Lu,

Liu,

et al. 2021

Preprint

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We investigate the single-photon blockade (1PB) in the quasichiral regime of atom-photon interaction that mediates via dissipative environment, where the effective atom-photon interaction is asymmetrical but achiral. The synthetic magnetic current in the closed-loop coupling breaks down the reciprocity of atom-photon interaction, resulting in an asymmetrical and even completely unidirectional effective coupling between two selected quantum states. As an example, we couple the single-atom cavity-QED (cQED) system to a strongly dissipative auxiliary cavity. We find that in the quasichiral regime, the unconventional photon blockade (UPB) always incorporates with the conventional photon blockade (CPB) in the condition of maximum chirality. Furthermore, we show that 1PB in the quasichiral regime combines the advantages of UPB and CPB, demonstrating the perfect single-photon purity, higher efficiency, smooth time dynamics as well as lower requirement of modes coupling to achieve UPB. Our work paves the way for 1PB towards practical applications and reveals the intriguing quantum-optics phenomena in the quasichiral light-matter interaction.

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Section: Discussionmentioning

confidence: 75%

Single-photon blockade in quasichiral atom-photon interaction: Simultaneous high purity and high efficiency

Lu,

Liu,

et al. 2021

Preprint

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“…In ref. [287], a hybrid plasmonic photonic cavity consisting of an L3 photonic crystal cavity and a bow‐tie nanoantenna was theoretically proposed. The ratio

Q / V

was boosted 25 times compared to that of a bare L3 photonic crystal cavity and 60‐fold greater than that corresponding to a plasmonic bow‐tie antenna.…”

Section: Applicationsmentioning

confidence: 99%

Applications of Hybrid Metal‐Dielectric Nanostructures: State of the Art

Barreda

Vitale

Minovich

et al. 2022

Advanced Photonics Research

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Enhancing the light‐matter interactions is important for many different applications like sensing, surface enhanced spectroscopies, solar energy harvesting, and for quantum effects such as nonlinear frequency generation or spontaneous and stimulated emission. Hybrid metal‐dielectric nanostructures have shown extraordinary performance in this respect, demonstrating their superiority with respect to bare metallic or high refractive index dielectric nanostructures. Such hybrid nanostructures can combine the best of two worlds: strong confinement of the electromagnetic energy by metallic structures and high scattering directivity and low losses of the dielectric ones. In this review, following a general overview of the properties of metal‐dielectric nanostructures, some of their most relevant applications including directional scattering, sensing, surface enhanced Raman spectroscopy, absorption enhancement, fluorescence and quantum dot emission enhancement, nonlinear effects, as well as lasing, are summarized.

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“…Conversely, extreme subwavelength spatial confinement in nm-scale plasmonic gaps comes at the cost of very short photon lifetimes, thus reducing the Q-factor. 8,9 In the last few years, hybrid plasmonic-photonic cavities 8,[10][11][12][13][14][15][16] have emerged as a promising way of mixing both types of confinement approaches, taking advantage of the idea of placing a gap plasmonic nanoantenna in a large field confinement region of a dielectric cavity where both modes, plasmonic and photonic, can hybridize. This results in new features not attainable by either plasmonic or photonic cavities when operating individually.…”

Section: Introductionmentioning

confidence: 99%

Hybrid photonic-plasmonic cavities based on the nanoparticle-on-a-mirror configuration

et al. 2021

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Hybrid photonic-plasmonic cavities have emerged as a new platform to increase light-matter interaction capable to enhance the Purcell factor in a singular way not attainable with either photonic or plasmonic cavities separately. In the hybrid cavities proposed so far, the plasmonic element is usually a metallic bow-tie antenna, so the plasmonic gap-defined by lithography-is limited to minimum values of several nanometers. Nanoparticleon-a-mirror (NPoM) cavities are far superior to achieve the smallest possible mode volumes, as plasmonic gaps smaller than 1 nm can be created. Here, we design a hybrid cavity that combines an NPoM plasmonic cavity and a dielectric-nanobeam photonic crystal cavity operating at transverse-magnetic polarization. The metallic nanoparticle can be placed very close (<1 nm) to the upper surface of the dielectric cavity, which acts as a low-reflectivity mirror. We demonstrate through numerical calculations of the local density of states that this hybrid plasmonicphotonic cavity exhibits quality factors Q above 10 3 and normalized mode volumes V down to 10 −3 , thus resulting in high Purcell factors (F P ≈ 10 5 ), while being experimentally feasible with current technology. Our results suggest that hybrid cavities with sub-nanometer gaps should open new avenues for boosting light-matter interaction in nanophotonic systems.

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Hybrid photonic-plasmonic nano-cavity with ultra-high Q/V

Cited by 33 publications

References 35 publications

Single-photon blockade in quasichiral atom-photon interaction: Simultaneous high purity and high efficiency

Single-photon blockade in quasichiral atom-photon interaction: Simultaneous high purity and high efficiency

Applications of Hybrid Metal‐Dielectric Nanostructures: State of the Art

Hybrid photonic-plasmonic cavities based on the nanoparticle-on-a-mirror configuration

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