Real and Imaginary Properties of Epsilon-Near-Zero Materials

Javani, M.; Stockman, Mark I.

doi:10.1103/physrevlett.117.107404

Cited by 144 publications

(98 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…proposed. Yet, realistic ENZ phenomena are typically associated with dissipation losses [39], which would hinder the phenomenon, making the realistic verification challenging.…”

Section: Suppression Of Radiation Losses In Open Electromagnetic Systmentioning

confidence: 99%

Embedded scattering eigenstates using resonant metasurfaces

Krasnok

Alù

2018

J. Opt.

View full text Add to dashboard Cite

Optical embedded eigenstates are localized modes of an open structure that are compatible to radiation yet they have infinite lifetime and diverging quality factors. Their realization in nanostructures finite in all dimensions is inherently challenging, because they require materials with extreme electromagnetic properties. Here we develop a novel approach to realize these bound states in the continuum using ultrathin metasurfaces composed of arrays of nanoparticles. We first show that arrays of lossless nanoparticles can realize the condition for embedded eigenstates, and then explore the use of Ag nanoparticles coated with gain media shells to compensate material loss and revive the embedded eigenstate despite realistic loss in plasmonic materials. We discuss the possible experimental realization of the proposed structures and provide useful guidelines for practical implementation in nanophotonics systems with largely enhanced light-matter interactions. These metasurfaces may lead to highly efficient lasers, filters, frequency comb generation and sensors.

show abstract

“…proposed. Yet, realistic ENZ phenomena are typically associated with dissipation losses [39], which would hinder the phenomenon, making the realistic verification challenging.…”

Section: Suppression Of Radiation Losses In Open Electromagnetic Systmentioning

confidence: 99%

Embedded scattering eigenstates using resonant metasurfaces

Krasnok

Alù

2018

J. Opt.

View full text Add to dashboard Cite

show abstract

“…In this work, by utilizing the unique constraint of constant fields within zero‐index medium (ZIM, with permittivity or/and permeability near zero), we propose to realize CPA via the photonic doping of ZIM with absorptive defects. The concept and theory of “photonic doping” of an epsilon‐near‐zero (ENZ) medium, i.e.…”

Section: Introductionmentioning

confidence: 99%

Coherent Perfect Absorption via Photonic Doping of Zero‐Index Media

Luo

Liu

Hang

et al. 2018

Laser & Photonics Reviews

View full text Add to dashboard Cite

Coherent perfect absorption, as time‐reversed lasing, is achieved via appropriate interference of waves in absorbers and provides attractive opportunities for flexible control of light scattering and absorption. Here, the authors theoretically and experimentally demonstrate the realization of coherent perfect absorption by using photonic doping of zero‐index media with absorptive defects. Interestingly, the coherent perfect absorption is independent of the size and shape of this “doped” zero‐index medium absorber, as well as the position of the doping defects. This exceptional absorption property can be well explained via the photonic doping theory for zero‐index media. Moreover, the authors demonstrate that the doping scheme also enables novel ways to control absorption, such as multiple channels and multiple doping defects, etc. This work proposes a unique doping approach for advanced coherent perfect absorption with versatile control functionalities.

show abstract

“…To illustrate this we embedded gold cylinders of radius 70 nm in each cavity (Fig.6). The particles are placed in the sites with the highest electric field and the active QE One specific limitation of the ENZ network is that it demands low losses, since intrinsic losses are responsible for significant deterioration of the signal and have the greatest influence on the coherence properties of ENZ [27]. Several alternatives have been proposed in order to mitigate the problem of losses, such as, usage of all-dielectric metamaterials [28], operating photonic crystals at Dirac's triple point [29], loss compensation by gain material, i. g., fluorescent dyes [30,31] or cooling waveguides to cryogenic temperatures.…”

mentioning

confidence: 99%

Epsilon-Near-Zero Grids for On-chip Quantum Networks

Vertchenko

Akopian

Lavrinenko

2019

Sci Rep

View full text Add to dashboard Cite

Realization of an on-chip quantum network is a major goal in the field of integrated quantum photonics. A typical network scalable on-chip demands optical integration of single photon sources, optical circuitry and detectors for routing and processing of quantum information. Current solutions either notoriously experience considerable decoherence or suffer from extended footprint dimensions limiting their on-chip scaling. Here we propose and numerically demonstrate a robust on-chip network based on an epsilon-near-zero (ENZ) material, whose dielectric function has the real part close to zero. We show that ENZ materials strongly protect quantum information against decoherence and losses during its propagation in the dense network. As an example, we model a feasible implementation of an ENZ network and demonstrate that information can be reliably sent across a titanium nitride grid with a coherence length of 434 nm, operating at room temperature, which is more than 40 times larger than state-of-the-art plasmonic analogs. Our results facilitate practical realization of large multi-node quantum photonic networks and circuits on-a-chip.

show abstract

Real and Imaginary Properties of Epsilon-Near-Zero Materials

Cited by 144 publications

References 46 publications

Embedded scattering eigenstates using resonant metasurfaces

Embedded scattering eigenstates using resonant metasurfaces

Coherent Perfect Absorption via Photonic Doping of Zero‐Index Media

Epsilon-Near-Zero Grids for On-chip Quantum Networks

Contact Info

Product

Resources

About