Quantum noise and self-sustained radiation of PT-symmetric systems
Quantum Physics
2010-06-10 v2 Other Condensed Matter
Optics
Abstract
The observation that PT-symmetric Hamiltonians can have real-valued energy levels even if they are non-Hermitian has triggered intense activities, with experiments, in particular, focusing on optical systems, where Hermiticity can be broken by absorption and amplification. For classical waves, absorption and amplification are related by time-reversal symmetry. This work shows that microreversibility-breaking quantum noise turns PT-symmetric systems into self-sustained sources of radiation, which distinguishes them from ordinary, Hermitian quantum systems.
Keywords
Cite
@article{arxiv.1001.0539,
title = {Quantum noise and self-sustained radiation of PT-symmetric systems},
author = {Henning Schomerus},
journal= {arXiv preprint arXiv:1001.0539},
year = {2010}
}
Comments
4+1 pages (slightly expanded published version)