Photonic topological insulators

Khanikaev, Alexander B.; Mousavi, S. Hossein; Tse, Wang Kong; Kargarian, Mehdi; MacDonald, Allan H.; Shvets, Gennady

doi:10.1038/nmat3520

Cited by 1,792 publications

(1,403 citation statements)

References 49 publications

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“…This approach is especially useful for metamaterials and photonic crystals, as it opens up new lattice geometries hosting conical intersections for beams at normal incidence [18,33,34] and intersections based on degeneracies of transverse electric (TE) and transverse magnetic (TM) modes [35]. Typically the degeneracy is achieved by tuning parameters such as dielectric rod radius or filling factor in photonic crystals [36][37][38], refractive index contrast of nanoparticles [18], lattice period [39], or coupling strength between resonators [31,40].…”

Section: Designmentioning

confidence: 99%

Conical intersections for light and matter waves

Leykam

Desyatnikov

2016

Advances in Physics: X

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We review the design, theory, and applications of two dimensional periodic lattices hosting conical intersections in their energy-momentum spectrum. The best known example is the Dirac cone, where propagation is governed by an effective Dirac equation, with electron spin replaced by a "fermionic" half-integer pseudospin. However, in many systems such as metamaterials, modal symmetries result in the formation of higher order conical intersections with integer or "bosonic" pseudospin. The ability to engineer lattices with these qualitatively different singular dispersion relations opens up many applications, including superior slab lasers, generation of orbital angular momentum, zeroindex metamaterials, and quantum simulation of exotic phases of relativistic matter.

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Section: Designmentioning

confidence: 99%

Conical intersections for light and matter waves

Leykam

Desyatnikov

2016

Advances in Physics: X

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“…A promising perspective to induce SO coupling in photonic systems is to use the intrinsic photon spin: the polarization degree of freedom [15]. In combination with the strong spin-dependent interactions naturally present in microcavity-polariton devices and the possibility of scaling up to lattices of arbitrary geometry [16][17][18], the realization of such a coupling in semiconductor microcavities would open the way to the simulation of many-body effects in a new quantum optical context [19].…”

Section: Introductionmentioning

confidence: 99%

Spin-Orbit Coupling for Photons and Polaritons in Microstructures

et al. 2015

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We use coupled micropillars etched out of a semiconductor microcavity to engineer a spin-orbit Hamiltonian for photons and polaritons in a microstructure. The coupling between the spin and orbital momentum arises from the polarization-dependent confinement and tunneling of photons between adjacent micropillars arranged in the form of a hexagonal photonic molecule. It results in polariton eigenstates with distinct polarization patterns, which are revealed in photoluminescence experiments in the regime of polariton condensation. Thanks to the strong polariton nonlinearities, our system provides a photonic workbench for the quantum simulation of the interplay between interactions and spin-orbit effects, particularly when extended to two-dimensional lattices.

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“…It can also be regarded as photonic states with the timereversal symmetry which resembles the surface electronic state in electronic topological insulators. The time-reversal symmetry protects the light travels one way only without any reflection at interface of two media, similar to what is seen in topological photonic edge states [20]. The codes g and m represent linear to linear conversion with 90°phase shift or timereversal symmetry state for linear polarizations.…”

Section: Applications In Opticsmentioning

confidence: 80%

The codes of matter and their applications

Wang

2015

Science Bulletin

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The elements in the periodic table are the building blocks used to form substances with different compositions. Nevertheless, it is the properties of substances that are decisive for their existence and practical applications. Searching for new class of materials with exotic properties has always been challenging because of the complexity of both the theoretical and the experimental approaches developed so far. Here, we propose that the three ubiquitous and paramount attributes of all existing matter charge (Q), spin (S) or rotational motion, and linear motion (K) can be used to account for the formation of different types of matter/materials and their properties that have been or will be known to us. The three attributes or original codes can produce six primary codes which can further produce another sixty codes. The physical meanings represented by each code are unlocked. The table consisting of the 60 codes is introduced as the table of properties of codes of matter. We demonstrate that these codes can be used as building blocks to form new properties and new materials. Abstract The elements in the periodic table are the building blocks used to form substances with different compositions. Nevertheless, it is the properties of substances that are decisive for their existence and practical applications. Searching for new class of materials with exotic properties has always been challenging because of the complexity of both the theoretical and the experimental approaches developed so far. Here, we propose that the three ubiquitous and paramount attributes of all existing matter charge (Q), spin (S) or rotational motion, and linear motion (K) can be used to account for the formation of different types of matter/materials and their properties that have been or will be known to us. The three attributes or original codes can produce six primary codes which can further produce another sixty codes. The physical meanings represented by each code are unlocked. The table consisting of the 60 codes is introduced as the table of properties of codes of matter. We demonstrate that these codes can be used as building blocks to form new properties and new materials. Many new types of quasiparticles and new classes of materials with exotic properties of Q, S and K are predicted. Their possible experimental realizations are proposed. The possible applications of the codes of matter in other fields such as elementary particles, photonics and chemistry are briefly discussed. We know that there should be more new materials and new electronic, spin and photonic states to be discovered, but we do not know what they are. The codes of matter clearly reveal to us how many and what they are and how easily we can recognize what they are. Experimental and theoretical exploration for new forms of matter, new quasiparticles, or new electronic and spin states, or new states of photon or properties of light, as well as macroscopic entities with exotic properties represented by the codes of matter, is imminent.

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Photonic topological insulators

Cited by 1,792 publications

References 49 publications

Conical intersections for light and matter waves

Conical intersections for light and matter waves

Spin-Orbit Coupling for Photons and Polaritons in Microstructures

The codes of matter and their applications

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