Topology in a synthetic dimension as a tool for non-reciprocal photonic transport

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Authors

  • Oded Zilberberg
  • Hannah M Price
  • Tomoki Ozawa
  • Nathan Goldman
  • Iacopo Carusotto

Colleges, School and Institutes

External organisations

  • ETH Zurich
  • CNR-INFM BEC Center
  • Université Libre de Bruxelles

Abstract

The silicon micro-ring resonator is an important ingredient for integrated photonics [1]. In it, light resonates around a ring leading to a discrete set of resonances that are almost equally spaced in frequency. Recently, we have proposed that these resonances can be coupled by modulation of the dielectric tensor of the cavity to form a synthetic dimension, i.e., light will ‘hop’ between these resonance frequencies in a way similar to a particle hopping between neighboring resonators [2], see Fig. 1(a). Additionally, in a periodic chain of such micro-rings, photons can ‘hop’ between different sites (analogous to electrons tunneling between atoms in a crystal). As the overlap between different frequency states on different resonators is small, we thus obtain an effective two-dimensional lattice for photons composed of a single real space plus a synthetic dimension, see Fig. 1(b). Last, applying a different phase to the dielectric tensor modulations on different sites can encode a synthetic gauge to the hopping on the effective 2D model, leading to quantum Hall effect physics in the combined space-frequency plane. These ideas can be generalized to make the realization of the 4D quantum Hall effect possible using 3D micro-ring arrays and a synthetic dimension.

Details

Original languageEnglish
Title of host publicationEuropean Quantum Electronics Conference, EQEC 2017
Publication statusPublished - 30 Oct 2017
EventEuropean Quantum Electronics Conference, EQEC 2017 - Munich, Germany
Duration: 25 Jun 201729 Jun 2017

Conference

ConferenceEuropean Quantum Electronics Conference, EQEC 2017
Country/TerritoryGermany
CityMunich
Period25/06/1729/06/17

Keywords

  • Resonant frequency, Optical resonators, Photonics, Frequency modulation, Dielectrics, Two dimensional displays, Lattices