| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1892381 | Chaos, Solitons & Fractals | 2007 | 7 Pages |
Abstract
Evolution of quantum fidelity for two-level systems is studied in the context of periodic echo. For time independent case, we obtain a formal condition on the governing Hamiltonians under which the systems display periodic quantum echo. In addition, a revisit of single spin-1/2 system exposed to uniform rotating magnetic field elucidates that the well known Rabi oscillation is a simple mechanism to generate such echoes.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Statistical and Nonlinear Physics
Authors
R. Sankaranarayanan, Jane H. Sheeba, M. Lakshmanan,