English

Gain without inversion in quantum systems with broken parities

Quantum Physics 2015-05-18 v3

Abstract

For a quantum system with broken parity symmetry, selection rules can not hold and cyclic transition structures are generated. With these loop-transitions we discuss how to achieve inversionless gain of the probe field by properly setting the control and auxiliary fields. Possible implementations of our generic proposal with specific physical objects with broken parities, e.g., superconducting circuits and chiral molecules, are also discussed.

Keywords

Cite

@article{arxiv.1003.4100,
  title  = {Gain without inversion in quantum systems with broken parities},
  author = {W. Z. Jia and L. F. Wei},
  journal= {arXiv preprint arXiv:1003.4100},
  year   = {2015}
}

Comments

12 pages, 4 figures

R2 v1 2026-06-21T15:00:36.857Z