Superradiance of non-Dicke states
Abstract
In 1954, Dicke predicted that a system of quantum emitters confined to a subwavelength volume would produce a superradiant burst. For such a burst to occur, the emitters must be in the special Dicke state with zero dipole moment. We show that a superradiant burst may also arise for non-Dicke initial states with nonzero dipole moment. Both for Dicke and non-Dicke initial states, superradiance arises due to a decrease in the dispersion of the quantum phase of the emitter state. For non-Dicke states, the quantum phase is related to the phase of long-period envelopes which modulate the oscillations of the dipole moments. A decrease in dispersion of the quantum phase causes a decrease in the dispersion of envelope phases that results in constructive interference of the envelopes and the superradiant burst.
Keywords
Cite
@article{arxiv.1603.09214,
title = {Superradiance of non-Dicke states},
author = {N. E. Nefedkin and E. S. Andrianov and A. A. Zyablovsky and A. A. Pukhov and A. P. Vinogradov and A. A. Lisyansky},
journal= {arXiv preprint arXiv:1603.09214},
year = {2017}
}