Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1537843 | Optics Communications | 2011 | 6 Pages |
Abstract
We study the Kerr nonlinearity associated with cross-phase modulation based on electromagnetically induced transparency in asymmetric double quantum wells. It is shown that, different from atomic system, not only the nonlinear dispersion and absorption but also the linear absorption depends on the relative phase of the laser fields because of the Fano interference. By choosing the parameters appropriately, large cross-phase modulation with nearly vanishing two-photon absorption, even π phase shift with single photon level, could be achieved in the asymmetric quantum wells.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Yihong Qi, Yueping Niu, Yang Xiang, Helin Wang, Shangqing Gong,