Document Type
Article
Publication Date
6-28-2012
Abstract
The beat time τ fpt associated with the energy transfer between two coupled oscillators is dictated by the bandwidth theorem which sets a lower bound τ fpt∼1/δω. We show, both experimentally and theoretically, that two coupled active LRC electrical oscillators with parity-time (PT) symmetry bypass the lower bound imposed by the bandwidth theorem, reducing the beat time to zero while retaining a real valued spectrum and fixed eigenfrequency difference δω. Our results foster design strategies which lead to (stable) pseudounitary wave evolution, and may allow for ultrafast computation, telecommunication, and signal processing. © 2012 American Physical Society.
Recommended Citation
Ramezani, Hamidreza, J. Schindler, Fred M. Ellis, Uwe Günther, and Tsampikos Kottos. "Bypassing the bandwidth theorem with PT symmetry." Physical Review A 85, no. 6 (2012): 062122. http://doi.org/10.1103/PhysRevA.85.062122
Publication Title
Physical Review A - Atomic, Molecular, and Optical Physics
DOI
10.1103/PhysRevA.85.062122
Comments
© Physical Review A - Atomic, Molecular, and Optical Physics. Original version available at: http://doi.org/10.1103/PhysRevA.85.062122