Quantum Zeno-based control mechanism for molecular fragmentation

Details Quantum Zeno-based control mechanism for molecular fragmentation Quantum Zeno-based control mechanism for molecular fragmentation

2011-06-21

arxiv.org/abs/1106.4143v2

J. Chem. Phys. 136, 121101 (2012)

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

10.1063/1.3698278

A quantum control mechanism is proposed for molecular fragmentation processes within a scenario grounded on the quantum Zeno effect. In particular, we focus on the van der Waals Ne-Br$_2$ complex, which displays two competing dissociation channels via vibrational and electronic predissociation. Accordingly, realistic three dimensional wave packet simulations are carried out by using ab initio interaction potentials recently obtained to reproduce available experimental data. Two numerical models to simulate the repeated measurements are reported and analyzed. It is found that the otherwise fast vibrational predissociation is slowed down in favor of the slow electronic (double fragmentation) predissociation, which is enhanced by several orders of magnitude. Based on these theoretical predictions, some hints to experimentalists to confirm their validity are also proposed.

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