PJ-symmetric coupled waveguides, for which the Berry curvature corresponds to a hyperbolic pseudo-magnetic monopole or antimonopole, are shown to have a purely imaginary Berry connection, which can induce gain and loss when it is non-periodic.

© 2019 The Author(s)

PDF Article


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription