Non-Markovian spectral broadening in interacting continuous-wave atom lasers

Autor:	D. Faller, Heinz-Peter Breuer, Francesco Petruccione, Bernd Kappler
Rok vydání:	2001
Předmět:	Condensed Matter::Quantum Gases Physics Spectrum (functional analysis) General Physics and Astronomy Laser law.invention Atom laser law Quantum mechanics Atom Continuous wave Physics::Atomic Physics Quantum field theory Bose–Einstein condensate Doppler broadening
Zdroj:	Europhysics Letters (EPL). 54:14-20
ISSN:	1286-4854 0295-5075
DOI:	10.1209/epl/i2001-00222-0
Popis:	The non-Markovian dynamics of a continuous-wave atom laser model is studied which includes gravitational effects and interactions inside the Bose-Einstein condensate. With the help of the time-convolutionless projection operator technique both the occupation number of the condensate and the spectrum of the atoms coupled out of the condensate are determined. A correct modeling of memory effects in the atom laser requires a generalization of the projection operator technique which takes into account correlations in the initial state of the combined atom-reservoir system. The non-Markovian evolution is shown to yield substantial deviations from results obtained in the Born-Markov approximation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fa6e502b23853e7f866269f8feba1ba8 https://doi.org/10.1209/epl/i2001-00222-0 Zobrazit plný text záznamu