Jörg Evers and Christoph H Keitel 2004 J. Phys. B: At. Mol. Opt. Phys. 37 2771 doi:10.1088/0953-4075/37/13/013
Jörg Evers1 and Christoph H Keitel1,2
Show affiliationsThe spontaneous emission is investigated for an effective atomic two-level system in an intense coherent field with frequency lower than the vacuum-induced decay width. As this additional low-frequency field is assumed to be intense, multiphoton processes may be induced, which can be seen as alternative transition pathways in addition to the simple spontaneous decay. The interplay of the various interfering transition pathways influences the decay dynamics of the two-level system and may be used to slow down the spontaneous decay considerably. We derive from first principles an expression for the Hamiltonian including up to three-photon processes. This Hamiltonian is then applied to a quantum mechanical simulation of the decay dynamics of the two-level system. Finally, we discuss numerical results of this simulation based on a rubidium atom and show that the spontaneous emission in this system may be suppressed substantially.
32.50.+d Fluorescence, phosphorescence (including quenching)
32.80.Rm Multiphoton ionization and excitation to highly excited states
Issue 13 (14 July 2004)
Received 26 April 2004
Published 21 June 2004
Jörg Evers and Christoph H Keitel 2004 J. Phys. B: At. Mol. Opt. Phys. 37 2771
T Pattard et al 2003 J. Phys. B: At. Mol. Opt. Phys. 36 L189
J Schulz et al 2002 J. Phys. B: At. Mol. Opt. Phys. 35 907
Ph Wernet et al 2002 J. Phys. B: At. Mol. Opt. Phys. 35 3887
Tihamér Geyer and Jan M Rost 2001 J. Phys. B: At. Mol. Opt. Phys. 34 L47
M E Madjet et al 2001 J. Phys. B: At. Mol. Opt. Phys. 34 L345
Seung Ki Baek et al 2009 J. Phys. A: Math. Theor. 42 478001
Somendra M Bhattacharjee 2007 J. Phys. A: Math. Theor. 40 1703
H De Bie and F Sommen 2007 J. Phys. A: Math. Theor. 40 10441
Minoru Eto et al 2006 J. Phys. A: Math. Gen. 39 R315