trapped Bose-Einstein condensates
Instabilities of vortices in a binary mixture of trapped Bose-Einstein condensates : role of collective excitations with positive and negative energies
... of condensates [1] we will demonstrate that these vortices can have complex frequencies in their spectrum, thereby giving good practical ground for selfconsistent theoretical interpretation of this phenomenon in ...
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Entropy of a Turbulent Bose-Einstein Condensate
... and trapped Bose-Einstein condensates ...a trapped BEC in several regimes, including equilibrium, small excitations, the onset of turbulence, and a turbulent ...
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Magnetic microtraps for cavity QED, Bose Einstein condensates, and atom optics
... a trapped cloud of cold neutral atoms—cesium in our case—into contact with a PBG or microdisk cavity, simultaneously demonstrating the integration of a microfabricated cavity with an atom chip and the strong ...
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An Evaluation of Critical Frequency of Vortex as a Function of Number of Atoms N in Bose Einstein Condensates
... the study of transport phenomena are not easily feasible in trapped gases. On the other hand, interference patterns, associated with phase coherence, have been already observed (Andrews, Townsend et.al.) 1 and ...
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The role of interactions in atom interferometry with Bose Condensed atoms
... 87Rb Bose-Einstein conden ...atom condensates. The impact of interactions is most pronounced in trapped atom interferometry due to the high particle density, making these systems ideal for ...
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Time-dependent variational approach for Bose-Einstein condensates with nonlocal interaction
... The numerical results for the van der Waals-like nonlocal interaction are presented in fi gures 6 and 7. The GPE and variational steady-state solutions show excellent agreement for η= 0 and α= 30 in fi gure 6, and also ...
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Stationary and traveling solitons via local dissipations in Bose-Einstein condensates in ring optical lattices
... Bose-Einstein condensates (BEC) trapped in an optical lat- tice have attracted a major scientific interest and can provide an interesting analogue to solid-state systems [1, ...
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Interactions and collisions of discrete breathers in two-species Bose-Einstein condensates in optical lattices
... We present an analysis of the interaction and collisional behavior of discrete breathers in two-species BEC in op- tical lattices in the tight-binding approximation which has been successfully used to describe ...
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Bose-Einstein condensates and degenerate Fermi gases
... A major role of the magnetic trap is to isolate cold atoms from the surround- ing environment, so that they can be cooled to temperatures low enough to reach BEC. Macroscopic magnetic traps tend to perform this task ...
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Bose-Einstein condensates in 'giant' toroidal magnetic traps
... The ‘low pressure’ MOT will be formed within a ‘square donut’ quartz vacuum cell (Fig. 2). This MOT will be an elongated [11], forced dark [12] MOT which should decrease light-assisted losses. The high product of the MOT ...
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Genuine tripartite entanglement and nonlocality in Bose Einstein condensates by collective atomic recoil
... philosophy [1]. In particular, the field of atomic and optical physics is experiencing a fruitful cross-fertilization with quantum information research. On one hand, tools developed for the study of quantum informational ...
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Anisotropy and vortices in Bose Einstein condensates
... in a superfluid. These aspects are described in [2], and will not be addressed here. In another experiment, achieved in the group of Jean Dalibard in Paris [17], a trapped system, which has a cigar shape, is ...
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Quantum decoherence of phonons in Bose–Einstein condensates
... to Bose- Einstein Condensates (BECs) in order to study, for the first time, the quantum decoherence of phonons of isolated ...on trapped ion and crystalline systems, another promising system ...
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Vortex nucleation in bose-einstein condensates due to effective magnetic fields
... initial state for Eq. 共3兲 is assumed to be real valued. The gauge potential during the initial-state calculation 共using imaginary time propagation兲 has therefore no effect. Only during the real-time propagation will the ...
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Interferometry and precision measurements with Bose-condensed atoms
... of Bose-condensed sources for applications in precision measurements and atom ...and Bose-Einstein condensates offer possible advantages compared to the commonly used thermal ...detection. ...
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On the observation of nonclassical excitations in Bose–Einstein condensates
... nonclassicality of the excitations in a BEC undergoing an arbitrary modulation of the interaction parameter. Below we discuss in depth two proposals that can be implemented using a TOF and / in-situ imaging technique of ...
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Dynamics of Vortices and their Interactions in Bose-Einstein Condensates
... mon one for helium, which is contained in large bucketts where the effects of the walls can be neglected. Theoretical (Nazarenko et al. 2003) and numerical (Koplik et al. 1993; De Waele et al. 1994; Tebbs et al. 2011; ...
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Transverse laser modes in Bose-Einstein condensates
... At this point, it is perhaps worth to briefly discuss the BEC-light analogy in slightly more detail. The time evo- lution of an interaction-free, un-trapped, 2-dimensional, BEC according to the Gross-Pitaevskii ...
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Sonic Superradiance in Bose Einstein Condensates
... As mentioned briefly above, it is important to remain aware of the limit of the analogy to a mapping between the behaviour of sound waves in a fixed background fluid flow and the behaviour of scalar fields in a fixed ...
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Icy tornadoes in the quantum world Josephson junctions of Bose Einstein condensates : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Mathematical Physics at Centre for Theoretical Chemistry and Physics, New Zealand Institute for Advanced Study, Massey University, Albany, New Zealand
... today, Bose-Einstein condensation is believed to be one of the underlying mechanisms of ...particular Bose-Einstein condensates (BEC) is an interesting topic from various ...
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