Coherence via decoherence
Abteilung für Quantenphysik, Universität Ulm - D-89069 Ulm, Germany
Accepted: 20 September 2001
In general, decoherence destroys quantum-mechanical interference originating from the coherent superposition of complex probability amplitudes. In this paper we show how decoherence of a quantized electromagnetic field inside a cavity influences atomic motion. This motion is entangled with the internal states of the atom and with the quantized field via the Jaynes-Cummings interaction. As a result, we present the effect of generating coherence in the subspace of the atomic motion via decoherence of the cavity field. The quantum trajectory method is used for the description of the relaxation process.
PACS: 03.65.Yz – Decoherence, open systems, quantum statistical methods / 42.50.Vk – Mechanical effects of light on atoms, molecules, electrons, and ions
© EDP Sciences, 2001