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Issue 43, 2015
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Quantum interference control of an isolated resonance lifetime in the weak-field limit

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Abstract

Resonance states play an important role in a large variety of physical and chemical processes. Thus, controlling the resonance behavior, and particularly a key property like the resonance lifetime, opens up the possibility of controlling those resonance mediated processes. While such a resonance control is possible by applying strong-field approaches, the development of flexible weak-field control schemes that do not alter significantly the system dynamics still remains a challenge. In this work, one such control scheme within the weak-field regime is proposed for the first time in order to modify the lifetime of an isolated resonance state. The basis of the scheme suggested is quantum interference between two pathways induced by laser fields, that pump wave packet amplitude to the target resonance under control. The simulations reported here show that the scheme allows for both enhancement and quenching of the resonance survival lifetime, being particularly flexible to achieve large lifetime enhancements. Control effects on the resonance lifetime take place only while the pulse is operating. In addition, the conditions required to generate the two interfering quantum pathways are found to be rather easy to meet for general systems, which makes the experimental implementation straightforward and implies the wide applicability of the control scheme.

Graphical abstract: Quantum interference control of an isolated resonance lifetime in the weak-field limit

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Publication details

The article was received on 03 Aug 2015, accepted on 01 Oct 2015 and first published on 06 Oct 2015


Article type: Paper
DOI: 10.1039/C5CP04592D
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Citation: Phys. Chem. Chem. Phys., 2015,17, 29072-29078
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    Quantum interference control of an isolated resonance lifetime in the weak-field limit

    A. García-Vela, Phys. Chem. Chem. Phys., 2015, 17, 29072
    DOI: 10.1039/C5CP04592D

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