Synthetic Structures with Parity-Time Symmetry
Parity-time (PT) symmetric wave mechanics is a rapidly developed field with applications in various areas of physics and mathematics. Although originally proposed in the framework of Quantum Field Theory, it was recently recognized to be a natural mathematical language necessary to describe novel wave transport phenomena in synthetic structures where balanced gain and loss mechanisms coexist. Examples of its successful implementation can be found in areas ranging from integrated photonics and electronic circuitry to antenna theory and meta-materials. The objective of this chapter is to highlight some of these successes, both in modeling and experimental implementations, of PT-symmetric optical and electronic systems.
KeywordsParity-time Symmetries Couplers Meta-materials Electronics Modulation Bifurcation
The authors want to particularly thank our colleagues Hui Cao, Demetrios Christodoulides and Greg Salamo with whom we have had fruitful collaborations on this research topic. TK also acknowledge many useful discussions with F. Ellis on PT-electronics. Many of the results reviewed here is the outcome of fruitful collaboration with N. Bender, D. Christodoulides, F. Ellis, Z. Lin, H. Ramezani, J. Schindler, D. Wang, M. Zheng. The National Science Foundation through the ECCS-1128593 IDR grant has supported this collaborative work.
- 21.S. Longhi, Convective and absolute PT symmetry breaking in tight-binding lattices. arXiv:1310.5004v1 [quant-ph] (2013)Google Scholar