This article is cited in 6 papers

Strong electromagnetic fields

Dynamics of ionisation and entanglement in the 'atom + quantum electromagnetic field' system

P. R. Sharapova, O. V. Tikhonova

Lomonosov Moscow State University, Faculty of Physics

Abstract: The dynamics of a model Rydberg atom in a strong nonclassical electromagnetic field is investigated. The field-induced transitions to the continuum involving different numbers of photons (with intermediate states in the discrete spectrum) are taken into account and the specific features of ionisation in 'squeezed' field states are considered in comparison with the case of classical light. A significant decrease in the ionisation rate is found, which is caused by the interference stabilisation of the atomic system. The entanglement of the atomic and field subsystems, the temporal dynamics of the correlations found, and the possibility of measuring them are analysed.

Keywords: interference stabilisation, nonclassical electromagnetic fields, entangled states.

PACS: 32.80.Ee, 32.80.Rm, 03.67.Bq, 42.50.Hz

Received: 20.12.2011
Revised: 16.01.2012

 English version: Quantum Electronics, 2012, 42:3, 199–207

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