Generating Weyl nodes in non-centrosymmetric cubic crystal structures

Goikoetxea, Joseba; Bravo‐Abad, Jorge; Merino, Jaime

doi:10.1088/2399-6528/ab983c

Cited by 4 publications

(2 citation statements)

References 65 publications

(120 reference statements)

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“…The discrete lattice model that embodies the photonic Weyl environment is given, for definiteness, by a generalization of the proposal described in ( 48 ), which we design to break inversion and time-reversal symmetries. However, we expect that the conclusions that we derive from this model can be extended to any tight-binding scheme featuring similar dispersive properties, particularly to those hosting a prototypical type I semimetallic phase ( 49 – 51 ). Furthermore, even if some tilting of the Weyl cones is assumed, the local character of the light-matter coupling might preclude the photonic excitation from leaking into the bulk modes, thereby enabling the generalization of the obtained results to this class of systems too.…”

Section: Resultsmentioning

confidence: 82%

Probing and harnessing photonic Fermi arc surface states using light-matter interactions

et al. 2023

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Fermi arcs, i.e., surface states connecting topologically distinct Weyl points, represent a paradigmatic manifestation of the topological aspects of Weyl physics. We investigate a light-matter interface based on the photonic counterpart of these states and prove that it can lead to phenomena with no analog in other setups. First, we show how to image the Fermi arcs by studying the spontaneous decay of one or many emitters coupled to the system’s border. Second, we demonstrate that, exploiting the negative refraction of these modes, the Fermi arc surface states can act as a robust quantum link, enabling, e.g., the occurrence of perfect quantum state transfer between the considered emitters or the formation of highly entangled states. In addition to their fundamental interest, our findings evidence the potential offered by the photonic Fermi arc light-matter interfaces for the design of more robust quantum technologies.

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Section: Resultsmentioning

confidence: 82%

Probing and harnessing photonic Fermi arc surface states using light-matter interactions

et al. 2023

Self Cite

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“…[72], which we design to break inversion and time-reversal symmetries. However, we expect that the conclusions we derive from this model can be extended to any tight-binding scheme featuring similar dispersive properties, particularly to those hosting a prototypical type I semimetallic phase [73][74][75].…”

Section: B Tailoring the Weyl Environmentmentioning

confidence: 86%

Probing and harnessing photonic Fermi arc surface states using light-matter interactions

García-Elcano¹,

Merino²,

Bravo‐Abad³

et al. 2022

Preprint

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Fermi arcs, i.e., surface states connecting topologically-distinct Weyl points, represent a paradigmatic manifestation of the topological aspects of Weyl physics. Here, we investigate a light-matter interface based on the photonic counterpart of these states and we prove that it can lead to phenomena with no analogue in other setups. First, we show how to image the Fermi arcs by studying the spontaneous decay of one or many emitters coupled to the system's border. Second, we demonstrate that the Fermi arc surface states can act as a robust quantum link. To do that we exploit the negative refraction experienced by these modes at the hinges of the system. Thanks to this mechanism a circulatory photonic current is created which, depending on the occurrence of revivals, yields two distinct regimes. In the absence of revivals, the surface states behave as a dissipative chiral quantum channel enabling, e.g., perfect quantum state transfer. In the presence of revivals, an effective off-resonant cavity is induced, which leads to coherent emitter couplings that can entangle them maximally. In addition to their fundamental interest, our findings evidence the potential offered by the photonic Fermi arc light-matter interfaces for the design of more robust quantum technologies.

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