By Martellucci S., Chester A.N., Aspect A.
Physics researchers survey the tools used to supply, manage, and research the condensate in dilute atomic gases, that have generated loads of pleasure considering the fact that their experimental demonstration in 1995. They emphasize the expected improvement of latest kinds of assets for the unconventional macroscopic quantum method of coherent atoms. Such resources are taking a look increasingly more just like a number of the sorts of lasers< - >pulsed, CW, mode locked< - >and more likely to produce a revolution just like that sparked via lasers 4 many years formerly. The 23 papers contain the lawsuits of a world institution of quantum electronics held in Erice, Italy in October 1999.
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This quantity involves lecture notes and chosen contributed papers provided on the overseas summer time university on New advancements in Semiconductor Physics held on the collage of Szeged, July 1-6, 1979. the key a part of the contributions during this quantity is said to the recent experimental technics and theoretical principles utilized in examine of latest semiconductor fabrics, as a rule III-V semiconductors.
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75: 3969. 3. Bradley, C. , Sackett, C. , and Hulet, R. , 1997, Bose-Einstein condensation of lithium: Observation of limited condensate number, Phys. Rev. Lett. 78: 985. 4. Fried, D. , Killian, T. , Moss, S. , and Greytak, T. , 1998, Bose-Einstein condensation of atomic hydrogen, Phys. Rev. Lett. 5. 6. 7. 8. 9. 10. 11. 12. 13. 81: 3811. Andrews, M. , Townsend, C. , Durfee, D. , Kurn, D. , 1997, Observation of interference between two Bose-Einstein condensates, Science 275: 637. Hall, D. , Matthews, M.
Individual images of the condensates reveal this vertical structure; see Fig. 8(1) Hz. More and more bands appear as the condensate is increasingly twisted. 47 D. S. Hall 4. SOLITONS Consider again Fig. 3(b). In this picture, we see two regions of condensate predominantly in state separated by a region of condensate predominantly in state This situation is analogous to a dark soliton, in which the "notch" in the density of is filled with the condensate. The relative phase between the two regions is since the differential twisting has resulted in a differential spin rotation.
A rich set of possibilities appears when the coupling drive is mostly on. One limit that can be explored is that of a weak coupling, in which a drive is tuned to be resonant with the overlap region between the two condensates. Atoms can then be locally transferred back and forth between the two states29, giving rise to behavior reminiscent of Josephson junctions in superconductors. Indeed, such a system constitutes a physical realization of some Josephson junction thought experiments considered by Leggett and Sols30.
Bose-Einstein Condensates and Atom Lasers by Martellucci S., Chester A.N., Aspect A.