We propose the implementation of a strongly driven one-atom laser, based on the off-resonant interaction of a three-level atom in Lambda configuration with a single cavity mode and three laser fields. We show that the system can be described equivalently by a two-level atom resonantly coupled to the cavity and driven by a strong effective coherent field. The effective dynamics can be solved exactly, including a thermal field bath, allowing an analytical description of field statistics and entanglement properties. We also show the possible generation of quantum superposition (Schrödinger cat) states for the whole atom-field system and for the field alone after atomic measurement. We propose a way to monitor the system decoherence by measuring atomic populations. Finally, we confirm the validity of our model through numerical solutions.
|Titolo:||Strongly driven one-atom laser and decoherence monitoring|
|Parole Chiave:||Atom lasers ; light coherence ; quantum entanglement ; quantum optics ; Schrödinger equation|
|Settore Scientifico Disciplinare:||Settore FIS/03 - Fisica della Materia|
|Data di pubblicazione:||2007|
|Digital Object Identifier (DOI):||10.1103/PhysRevA.76.033802|
|Appare nelle tipologie:||01 - Articolo su periodico|