FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2137086804> ?p ?o ?g. }

• W2137086804 abstract "A dilute gas Bose-Einstein condensate was probed and manipulated by off-resonant laser beams. Spontaneous and stimulated off-resonant light scatterings were studied experimentally. Stimulated, two-photon Bragg scattering was used for spectroscopic measurement of the mean-field energy and of the intrinsic momentum uncertainty of the condensate. The high momentum and energy resolution of this method allowed the determination of the coherence length of the condensate, which was shown to be equal to its size. Spontaneous, off-resonant Rayleigh scattering was studied by exposing an elongated condensate to a single off-resonant laser beam. Highly directional scattering of light and atoms was observed. This collective light scattering is shown to be directly analogous to Dicke superradiance, where the electronic coherence is replaced by the coherent center-of-mass motion of the atoms in the condensate. Superradiant Rayleigh scattering was used to amplify atomic matter waves. The active medium was a Bose-Einstein condensate, pumped by off-resonant laser light (“Dressed condensate”). An atomic wave packet was amplified with a gain of 10 to 100. Phase-coherence of the amplifier was verified by observing the interference of the output wave with a reference wave packet. Optical properties of the dressed condensate were also characterized, focusing on the key role of long-lived matter wave gratings produced by interference between the condensate at rest and the recoiling atoms. The narrow bandwidth for the optical gain gave rise to an extremely slow group velocity of an amplified light pulse (∼ 1m/s). The role of quantum statistics in these enhanced scatterings was studied. It was shown that the macroscopic occupation of a single quantum state is not necessary. These processes are in principle possible for fermionic or non-degenerate samples, provided the atomic ensemble has a sufficiently long coherence time. By moving a focused, far off-resonant laser beam through a condensate, vortex excitations were created in a Bose-Einstein condensate. They were observed as dislocations in the interference fringes formed by the stirred condensate and a second unperturbed condensate. The technique was shown to be a powerful tool to study turbulent superfluid flow. Thesis Supervisor: Wolfgang Ketterle Title: John D. MacArthur Professor of Physics" @default.
• W2137086804 created "2016-06-24" @default.
• W2137086804 creator A5037694822 @default.
• W2137086804 date "2001-01-01" @default.
• W2137086804 modified "2023-09-26" @default.
• W2137086804 title "Manipulating Bose-Einstein condensates with laser light" @default.
• W2137086804 cites W148336435 @default.
• W2137086804 cites W1502334991 @default.
• W2137086804 cites W1531862170 @default.
• W2137086804 cites W1549085211 @default.
• W2137086804 cites W1614859972 @default.
• W2137086804 cites W1620027882 @default.
• W2137086804 cites W1654073797 @default.
• W2137086804 cites W1667480103 @default.
• W2137086804 cites W1678429019 @default.
• W2137086804 cites W189738803 @default.
• W2137086804 cites W1964347990 @default.
• W2137086804 cites W1966477902 @default.
• W2137086804 cites W1967827306 @default.
• W2137086804 cites W1968400585 @default.
• W2137086804 cites W1969035154 @default.
• W2137086804 cites W1969073091 @default.
• W2137086804 cites W1969813360 @default.
• W2137086804 cites W1971237692 @default.
• W2137086804 cites W1972320999 @default.
• W2137086804 cites W1972849720 @default.
• W2137086804 cites W1973245396 @default.
• W2137086804 cites W1973676398 @default.
• W2137086804 cites W1979313477 @default.
• W2137086804 cites W1979835199 @default.
• W2137086804 cites W1980035846 @default.
• W2137086804 cites W1981033146 @default.
• W2137086804 cites W1981991701 @default.
• W2137086804 cites W1985557966 @default.
• W2137086804 cites W1985645227 @default.
• W2137086804 cites W1987443449 @default.
• W2137086804 cites W1991602497 @default.
• W2137086804 cites W1993988351 @default.
• W2137086804 cites W1995655737 @default.
• W2137086804 cites W1996723287 @default.
• W2137086804 cites W2000227240 @default.
• W2137086804 cites W2000301716 @default.
• W2137086804 cites W2001217244 @default.
• W2137086804 cites W2003398166 @default.
• W2137086804 cites W2004371444 @default.
• W2137086804 cites W2004844714 @default.
• W2137086804 cites W2005966001 @default.
• W2137086804 cites W2007454634 @default.
• W2137086804 cites W2007600675 @default.
• W2137086804 cites W2008518888 @default.
• W2137086804 cites W2009191289 @default.
• W2137086804 cites W2009661170 @default.
• W2137086804 cites W2011012278 @default.
• W2137086804 cites W2011720173 @default.
• W2137086804 cites W2011948620 @default.
• W2137086804 cites W2012008605 @default.
• W2137086804 cites W2012457443 @default.
• W2137086804 cites W2016170331 @default.
• W2137086804 cites W2017154611 @default.
• W2137086804 cites W2017435739 @default.
• W2137086804 cites W2020108535 @default.
• W2137086804 cites W2020819605 @default.
• W2137086804 cites W2024340062 @default.
• W2137086804 cites W2025965161 @default.
• W2137086804 cites W2026172272 @default.
• W2137086804 cites W2027516050 @default.
• W2137086804 cites W2028964195 @default.
• W2137086804 cites W2029604900 @default.
• W2137086804 cites W2030575195 @default.
• W2137086804 cites W2031964775 @default.
• W2137086804 cites W2032321394 @default.
• W2137086804 cites W2033763639 @default.
• W2137086804 cites W2034625834 @default.
• W2137086804 cites W2036694836 @default.
• W2137086804 cites W2037314830 @default.
• W2137086804 cites W2038249383 @default.
• W2137086804 cites W2041298512 @default.
• W2137086804 cites W2041746517 @default.
• W2137086804 cites W2042248542 @default.
• W2137086804 cites W2043473232 @default.
• W2137086804 cites W2046361599 @default.
• W2137086804 cites W2046436054 @default.
• W2137086804 cites W2047206092 @default.
• W2137086804 cites W2047674596 @default.
• W2137086804 cites W2047786449 @default.
• W2137086804 cites W2053543037 @default.
• W2137086804 cites W2053873804 @default.
• W2137086804 cites W2055086119 @default.
• W2137086804 cites W2056373938 @default.
• W2137086804 cites W2057085232 @default.
• W2137086804 cites W2057895595 @default.
• W2137086804 cites W2058155098 @default.
• W2137086804 cites W2058731487 @default.
• W2137086804 cites W2061309565 @default.
• W2137086804 cites W2068091367 @default.
• W2137086804 cites W2071401061 @default.
• W2137086804 cites W2072305879 @default.
• W2137086804 cites W2072566733 @default.
• W2137086804 cites W2073316617 @default.
• W2137086804 cites W2074496196 @default.

• next