Invisibility cloaking using pseudomagnetic field for photon

Fu, Liu; Horsley, S. A. R.; Li, Jensen

doi:10.1103/physrevb.95.075157

Cited by 10 publications

(4 citation statements)

References 33 publications

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“…This splitting can be interpreted as a gauge field (pseudo vector potential) for photons. It provides a 'magnetic' force to redirect light and can be utilized to design a cloak [44]. Figure 9(c) shows the simulations for a cylindrical cloak designed with gauge field approach.…”

Section: E Ih X Y X Y X Ymentioning

confidence: 99%

Roadmap on transformation optics

McCall¹,

Pendry²,

Galdi³

et al. 2018

J. Opt.

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Transformation Optics asks Maxwell's equations what kind of electromagnetic medium recreate some smooth deformation of space. The guiding principle is Einstein's principle of covariance: that any physical theory must take the same form in any coordinate system. This requirement fixes very precisely the required electromagnetic medium. The impact of this insight cannot be overestimated. Many practitioners were used to thinking that only a few analytic solutions to Maxwell's equations existed, such as the monochromatic plane wave in a homogeneous, isotropic medium. At a stroke, Transformation Optics increases that landscape from 'few' to 'infinity', and to each of the infinitude of analytic solutions dreamt up by the researcher, corresponds an electromagnetic medium capable of reproducing that solution precisely. The most striking example is the electromagnetic cloak, thought to be an unreachable dream of science fiction writers, but realised in the laboratory a few months after the papers proposing the possibility were published. But the practical challenges are considerable, requiring meta-media that are at once electrically and magnetically inhomogeneous and anisotropic. How far have we come since the first demonstrations over a decade ago? And what does the future hold? If the wizardry of perfect macroscopic optical invisibility still eludes us in practice, then what compromises still enable us to create interesting, useful, devices? While 3D cloaking remains a significant technical challenge, much progress has been made in 2dimensions. Carpet cloaking, wherein an object is hidden under a surface that appears optically flat, relaxes the constraints of extreme electromagnetic parameters. Surface wave cloaking guides subwavelength surface waves, making uneven surfaces appear flat. Two dimensions is also the setting in which conformal and complex coordinate transformations are realisable, and the possibilities in this restricted domain do not appear to have been exhausted yet. Beyond cloaking, the enhanced electromagnetic landscape provided by Transformation Optics has shown how fully analytic solutions can be found to a number of physical scenarios such as plasmonic systems used in electron energy loss spectroscopy (EELS) and cathodoluminescence (CL). Are there further fields to be enriched? A new twist to Transformation Optics was the extension to the space-time domain. By applying transformations to space-time, rather than just space, it was shown that events rather than objects could be hidden from view; Transformation Optics had provided a means of effectively redacting events from history. The hype quickly settled into serious nonlinear optical experiments that demonstrated the soundness of the idea, and it is now possible to consider the practical implications, particularly in optical signal processing, of having an 'interrupt-without-interrupt' facility that the socalled temporal cloak provides. Inevitable issues of dispersion in actual systems have only begun to be addressed. Now that time is included in ...

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Section: E Ih X Y X Y X Ymentioning

confidence: 99%

Roadmap on transformation optics

McCall¹,

Pendry²,

Galdi³

et al. 2018

J. Opt.

Self Cite

View full text Add to dashboard Cite

show abstract

“…′ Evidently, the out-of-diagonal parameters play the role of an effective magnetic field for photons and are responsible for the bidirectional and reflectionless edge wave propagation in this structure. Interestingly, Liu and Li have previously shown using totally different physical arguments that spatially dependent anisotropic media with a structure analogous to (22) can be used to create a pseudomagnetic field for photons [25,56,57]. Thus, our theory merges the concepts of pseudomagnetic fields and time-reversal invariant topological matter as particular cases of the class of P T D-invariant systems [24].…”

Section: Kane-mele Model In a Reciprocal Systemmentioning

confidence: 87%

Photonic analogues of the Haldane and Kane-Mele models

Lannebère

Silveirinha

2019

Metamaterials XII

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The condensed matter Haldane and Kane-Mele models revolutionized the understanding of what is an "insulator," as they unveiled novel classes of media that behave as metals near the surface, but are insulating in the bulk. Here, we propose exact electromagnetic analogues of these two influential models relying on a photonic crystal implementation of "artificial graphene" subject to an effective magnetic field. For the Haldane model, the required effective magnetic field for photons can be emulated with a spatially variable pseudo-Tellegen response. For the Kane-Mele model, the spin-orbit coupling can be mimicked using matched anisotropic dielectrics with identical permittivity and permeability, without requiring any form of bianisotropic couplings. Using full-wave numerical simulations and duality theory we verify that the nontrivial topology of the two proposed platforms results in the emergence of topologically protected gapless edge states at the interface with a trivial photonic insulator. Our theory paves the way for the emulation of the two condensed matter models in a photonic platform and determines another paradigm to observe topologically protected edge states in a fully reciprocal alldielectric and non-uniform anisotropic metamaterial.

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“…Evidently, the out-of-diagonal parameters play the role of an effective magnetic field for photons and are responsible for the bidirectional and reflectionless edge wave propagation in this structure. Interestingly, Liu and Li have previously shown using totally different physical arguments that spatially dependent anisotropic media with a structure analogous to (22) can be used to create a pseudomagnetic field for photons [24,55,56]. Thus, our theory merges the concepts of pseudomagnetic fields and time-reversal invariant topological matter as particular cases of the broader class of PT D-invariant systems [23].…”

Section: A Kane-mele Model In a Nonreciprocal Systemmentioning

confidence: 88%

Photonic analogues of the Haldane and Kane-Mele models

Lannebère

Silveirinha

2019

Nanophotonics

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The condensed matter Haldane and Kane-Mele models revolutionized the understanding of what is an "insulator", as they unveiled novel classes of media that behave as metals near the surface, but are insulating in the bulk. Here, we propose exact electromagnetic analogues of these two influential models relying on a photonic crystal implementation of "artificial graphene" subject to an effective magnetic field. For the Haldane model, the required effective magnetic field for photons can be emulated with a spatially variable pseudo-Tellegen response. For the Kane-Mele model, the spin-orbit coupling can be mimicked using matched anisotropic dielectrics with identical permittivity and permeability, without requiring any form of bianisotropic couplings. Using full wave numerical simulations and duality theory we verify that the nontrivial topology of the two proposed platforms results in the emergence of topologically protected gapless edge states at the interface with a trivial photonic insulator. Our theory paves the way for the emulation of the two condensed matter models in a photonic platform, and determines another paradigm to observe topologically protected edges-states in a fully reciprocal all-dielectric and non-uniform anisotropic metamaterial.

show abstract

Invisibility cloaking using pseudomagnetic field for photon

Cited by 10 publications

References 33 publications

Roadmap on transformation optics

Roadmap on transformation optics

Photonic analogues of the Haldane and Kane-Mele models

Photonic analogues of the Haldane and Kane-Mele models

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