Special Issue "Topological Photonics"

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: 31 March 2020.

Special Issue Editor

Dr. Daniel Leykam
E-Mail Website
Guest Editor
Center for Theoretical Physics of Complex Systems, Institute for Basic Science (IBS), Daejeon 34126, Korea
Interests: topological photonics; photonic lattices; flat bands

Special Issue Information

Dear Colleagues,

Topological phases in photonics have attracted significant interest since their first experimental demonstration in 2009, with observations in various platforms ranging from microwave metamaterials to nanoscale photonic crystals. Exciting developments in the past few years have included:

  • The emergence of 2D crystalline symmetry-protected topological phases as a platform for dielectric topological photonic crystals
  • Design of 3D topological photonic crystals and their realization at microwave frequencies
  • Generalizations of the topological band theory to non-Hermitian systems with gain and/or loss
  • Observations of lasing in topological photonic crystals and lattices

These developments highlight rapid progress towards harnessing topological concepts in future photonic devices such as optical isolators, lasers, and integrated waveguides. However, there are still a number of outstanding fundamental questions, such as:

  • Are current most popular methods used to implement photonic topological phases, largely based on isotropic dielectric media, optimal? Can topological photonics be extended to new classes of optical materials?
  • What are the ultimate limits to the size of topological photonic systems? Can 3D photonic topological insulators be scaled to visible wavelengths?
  • What role do topological phases play in nonlinear optical effects such as saturable gain or self-focusing? Can topological protection improve the performance of nonlinear devices such as lasers, switches, and isolators?

This Special Issue aims to highlight the most recent advances in the rapidly-evolving field, including theory, experiment, and potential applications. We welcome contributions studying not just topological photonics, but also closely related topics such as spin-orbit interactions of light, optical surface waves, and novel synergies between photonics and condensed matter physics.

Dr. Daniel Leykam
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (1 paper)

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Research

Open AccessArticle
Topological Protection and Control of Quantum Markovianity
Photonics 2020, 7(1), 18; https://doi.org/10.3390/photonics7010018 - 08 Feb 2020
Abstract
Under the Born–Markov approximation, a qubit system, such as a two-level atom, is known to undergo a memoryless decay of quantum coherence or excitation when weakly coupled to a featureless environment. Recently, it has been shown that unavoidable disorder in the environment is [...] Read more.
Under the Born–Markov approximation, a qubit system, such as a two-level atom, is known to undergo a memoryless decay of quantum coherence or excitation when weakly coupled to a featureless environment. Recently, it has been shown that unavoidable disorder in the environment is responsible for non-Markovian effects and information backflow from the environment into the system owing to Anderson localization. This turns disorder into a resource for enhancing non-Markovianity in the system–environment dynamics, which could be of relevance in cavity quantum electrodynamics. Here we consider the decoherence dynamics of a qubit weakly coupled to a two-dimensional bath with a nontrivial topological phase, such as a two-level atom embedded in a two-dimensional coupled-cavity array with a synthetic gauge field realizing a quantum-Hall bath, and show that Markovianity is protected against moderate disorder owing to the robustness of chiral edge modes in the quantum-Hall bath. Interestingly, switching off the gauge field, i.e., flipping the bath into a topological trivial phase, allows one to re-introduce non-Markovian effects. Such a result indicates that changing the topological phase of a bath by a tunable synthetic gauge field can be harnessed to control non-Markovian effects and quantum information backflow in a qubit-environment system. Full article
(This article belongs to the Special Issue Topological Photonics)

Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Confirmed Authors: (in alphabetical order)

Yuri Kivshar (Australian National University, Australia)
Andrei Lavrinenko (Technical University of Denmark, Denmark)
Stefano Longhi (Politecnico di Milano, Italy)
Henning Schomerus (Lancaster University, UK)
Mario Silveirinha (University of Lisbon, Portugal)

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