Momentum-space engineering of gaseous Bose-Einstein condensates
نویسندگان
چکیده
منابع مشابه
Boolean Bose-einstein Condensates Bose-einstein Condensates
Burris, Stanley. ‘‘George Boole.’’ In The Stanford Encyclopedia of Philosophy, edited by Edward N. Zalta. 2010. Available from http://plato.stanford.edu/archives/sum2010/entries/boole/ Krantz, Steven G. Discrete Mathematics Demystified. New York: McGraw-Hill, 2009. Nahin, Paul J. The Logician and the Engineer: How George Boole and Claude Shannon Created the Information Age. Princeton, NJ: Princ...
متن کاملTemperature Dependence of Vortex Nucleation in Gaseous Bose-Einstein Condensates
The formation of quantized vortices in trapped, gaseous Bose-Einstein condensates is considered. The thermodynamic stability of vortex states and the essential role of the surface excitations as a route for vortex penetration into the condensate are discussed. Special focus is on finite-temperature effects of the vortex nucleation process. It is concluded that the critical angular frequencies f...
متن کاملDissipationless flow and superfluidity in gaseous Bose-Einstein condensates
Superfluid flow is a manifestation of quantum mechanics at the macroscopic level. Phenomena like dissipationless flow and persistent currents can be traced back to the existence of a macroscopic wavefunction. The gradient of its phase gives the superfluid velocity. However, superfluid flow is only stable below a critical velocity. Above this velocity, excitations of the fluid can be generated, ...
متن کاملRotons in gaseous Bose-Einstein condensates irradiated by a laser.
A gaseous Bose-Einstein condensate irradiated by a far off-resonance laser has long-range interatomic correlations caused by laser-induced dipole-dipole interactions. These correlations, which are tunable via the laser intensity and frequency, can produce a "roton" minimum in the excitation spectrum--behavior reminiscent of the strongly correlated superfluid liquid He II.
متن کاملMomentum spectroscopy of 1D phase fluctuations in Bose-Einstein condensates.
We measure the axial momentum distribution of Bose-Einstein condensates with an aspect ratio of 152 using Bragg spectroscopy. We observe the Lorentzian momentum distribution characteristic of one-dimensional phase fluctuations. The temperature dependence of the width of this distribution provides a quantitative test of quasicondensate theory. In addition, we observe a condensate length consiste...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 2010
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.82.063613