Mesoscopic superposition and sub-Planck-scale structure in molecular wave packets

Details Mesoscopic superposition and sub-Planck-scale structure in molecular wave packets Mesoscopic superposition and sub-Planck-scale structure in molecular wave packets

2005-07-08

arxiv.org/abs/quant-ph/0507082v2

Phys. Rev. A 73, 013411 (2006)

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevA.73.013411

We demonstrate the possibility of realizing sub-Planck-scale structures in the mesoscopic superposition of molecular wave packets involving vibrational levels. The time evolution of the wave packet, taken here as the SU(2) coherent state of the Morse potential describing hydrogen iodide molecules, produces macroscopicquantum- superposition-like states, responsible for the above phenomenon. We investigate the phase-space dynamics of the coherent state through the Wigner function approach and identify the interference phenomena behind the sub-Planck-scale structures. The optimal parameter ranges are specified for observing these features.

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