Search for Off-Diagonal Density Matrix Elements for Atoms in a Supersonic Beam

Autor:	David A. Kokorowski, Herbert J. Bernstein, Winthrop W. Smith, Richard Rubenstein, Tony D. Roberts, Edward T. Smith, Al-Amin Dhirani, David E. Pritchard, Subhadeep Gupta, Jana Lehner
Rok vydání:	1999
Předmět:	Physics Density matrix Momentum Interferometry Range (particle radiation) Field (physics) Diagonal Physics::Accelerator Physics General Physics and Astronomy Supersonic speed Atomic physics Beam (structure)
Zdroj:	Physical Review Letters. 82:2018-2021
ISSN:	1079-7114 0031-9007
Popis:	We demonstrate the absence of off-diagonal elements for the density matrix of a supersonic Na atomic beam, thus showing that there are no coherent wave packets emerging from this source. We used a differentially detuned separated oscillatory field longitudinal interferometer to search for off-diagonal density matrix elements in the longitudinal energy/momentum basis. Our study places a stringent lower bound on their possible size over an off-diagonal energy range from 0 to 100 kHz.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6663966a4c43c955c7ac9ba5043276a2 https://doi.org/10.1103/physrevlett.82.2018 Zobrazit plný text záznamu