Determination of anisotropic dipole moments in self-assembled quantum dots using Rabi oscillations

By investigating the polarization-dependent Rabi oscillations using photoluminescence spectroscopy, we determined the respective transition dipole moments of the two excited excitonic states |Ex> and |Ey> of a single self-assembled quantum dot that are nondegenerate due to shape anisotropy. We find that the ratio of the two dipole moments is close to the physical elongation ratio of the quantum dot.Comment: 11 pages, 2 figures, MS Word generated PDF fil

Supersymmetric KdV equation: Darboux transformation and discrete systems

For the supersymmetric KdV equation, a proper Darboux transformation is presented. This Darboux transformation leads to the B\"{a}cklund transformation found early by Liu and Xie \cite{liu2}. The Darboux transformation and the related B\"{a}cklund transformation are used to construct integrable super differential-difference and difference-difference systems. The continuum limits of these discrete systems and of their Lax pairs are also considered.Comment: 13pages, submitted to Journal of Physics

The Chinese accounting profession in the People's Republic: A preliminary understanding from an oral history perspective

While oral history still has a marginal role in accounting literature in general, it has not been applied at all in relation to the history of Chinese accounting. Within broader research on accounting change in China, this paper uses oral history to investigate patterns of the career of accountants in China. We interviewed 21 retired accountants, aging from 60 to 90 at the time of the interview, asking them to share their professional experience in open and unstructured talk. We reconstruct individual experiences, which provides insights into the working lives of our interviewees. Unlike previous studies that only focus on influential informants, we investigate Chinese accounting changes as they emerge from the collective memory of everyday accountants. Taking a pluralist perspective, we collect non-archival data to illustrate the education and common elements in accounting career development. Our approach takes a ‘view from below’, underlining the limitations of top-down perspectives in most of the literature on accounting change in China. The findings contribute to our understanding of accounting changes in China and their social and economic impacts on the profession while providing interesting implications for oral history in accounting in general