Control of atomic decay rates via manipulation of reservoir mode frequencies

Details Control of atomic decay rates via manipulation of reservoir mode frequencies Control of atomic decay rates via manipulation of reservoir mode frequencies

2008-01-16

arxiv.org/abs/0801.2576v1

J. Phys. B: At, 39 pp. 3383--3401 (2006)

Physics

Quantum Physics

12 pages, 9 figures

Scientific paper

10.1088/0953-4075/39/16/020

We analyse the problem of a two-level atom interacting with a time-dependent dissipative environment modelled by a bath of reservoir modes. In the model of this paper the principal features of the reservoir structure remain constant in time, but the microscopic structure does not. In the context of an atom in a leaky cavity this corresponds to a fixed cavity and a time-dependent external bath. In this situation we show that by chirping the reservoir modes sufficiently fast it is possible to inhibit, or dramatically enhance the decay of the atomic system, even though the gross reservoir structure is fixed. Thus it is possible to extract energy from a cavity-atom system faster than the empty cavity rate. Similar, but less dramatic effects are possible for moderate chirps where partial trapping of atomic population is also possible.

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