Parity anomaly and Landau-level lasing in strained photonic honeycomb lattices

Schomerus, Henning and Halpern, Nicole (2013) Parity anomaly and Landau-level lasing in strained photonic honeycomb lattices. Physical review letters, 110 (1). ISSN 1079-7114

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Abstract

We describe the formation of highly degenerate, Landau-level-like amplified states in a strained photonic honeycomb lattice in which amplification breaks the sublattice symmetry. As a consequence of the parity anomaly, the zeroth Landau level is localized on a single sublattice and possesses an enhanced or reduced amplification rate. The selection of the sublattice depends on the strain orientation but is independent of the valley. The spectral properties of the higher Landau levels are constrained by a generalized time-reversal symmetry. In the setting of two-dimensional photonic crystal lasers, the anomaly affects the mode selection and lasing threshold while in three-dimensional photonic lattices it can be probed via the beam dynamics.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
61705
Deposited By:
Deposited On:
21 Jan 2013 10:15
Refereed?:
Yes
Published?:
Published
Last Modified:
30 Sep 2020 05:47