Parity-time symmetry meets photonics: A new twist in non-Hermitian optics
By S. Longhi. 2017
300 citations recorded by the source corpus.
In the past decade, the concept of parity-time symmetry, originally introduced in non-Hermitian extensions of quantum mechanical theories, has come into thinking of photonics, providing a fertile ground for studying, observing, and utilizing some of the peculiar aspects of symmetry in optics. Together with related concepts of non-Hermitian physics of open quantum systems, such as non-Hermitian degeneracies (exceptional points) and spectral singularities, symmetry represents one among the most fruitful ideas introduced in optics in the past few years. Judicious tailoring of optical gain and loss in integrated photonic structures has emerged as a new paradigm in shaping the flow of light in unprecedented ways, with major applications encompassing laser science and technology, optical sensing, and optical material engineering. In this perspective, I review some of the main achievements and emerging areas of -symmetric and non-Hermtian photonics, and provide an outline of challenges and directions for future research in one of the fastest growing research area of photonics.
Subfields: Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/be958f29a92c694ae5f9871459a893252ba7a9ae
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Non-Hermitian topology and exceptional-point geometries (2022, unknown): “H2 = [ 0 1 − δt(2) 1 − δt(2) −2i(1 + δz) ], (17)”
- Perspective on topological states of non-Hermitian lattices (2019, background): “ht seem devoid of physical meaning to speak about non-Hermitian Hamiltonians. However, non-Hermitian Hamiltonians arise as a natural effective description of different systems. This includes photonic [33, 34, 36] and acoustic systems where gains and losses are naturally present, and also open quantu”