Dynamical echo in two-state quantum systems

R. Sankaranarayanan, Jane H. Sheeba and M. Lakshmanan

Chaos, Solitons & Fractals, 2007, vol. 33, issue 5, 1618-1624

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.

Date: 2007
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:33:y:2007:i:5:p:1618-1624

DOI: 10.1016/j.chaos.2006.03.036

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