[PDF] Top 20 On the observation of nonclassical excitations in Bose–Einstein condensates

... the excitations are Gaussian ) , all of the three criteria are mathematically equivalent, and since the mode CSI is violated if and only if the state is nonseparable [50], all three of them can equally well ... See full document

... atomic Bose-Einstein condensates have been the subject of intense experimental 关3兴 and theoretical 关4兴 inves- ...the Bose-Einstein conden- sate, which can be performed with a very high ... See full document

... informative observation of random stochastic ...and Bose-Einstein condensate alike [199–201], taking advantage of the real part of the refractive index which generally results in a phase shift on the ... See full document

... In the last few years there have been several proposal to realize artificial gauge fields for quantum gases, thus overcoming the problem of their neutrality [14]. In particular, approaches based on the analogy between ... See full document

... Bose-Einstein condensates are a promising physical system to realise the ideas of analogue gravity [17], such as the observation of analogue Hawking radia- tion [16], analogue cosmological ... See full document

... dipolar Bose – Einstein condensates ( BECs ) in systems composed of atoms with a large magnetic moment provided a breakthrough in ultra-cold gas physics [ 1 – 3 ] ... See full document

... permit observation of Hawking ...system, Bose-Einstein Condensates, will be the approach taken in this thesis in order to build a foundation for the study of Hawking Radiation in the ... See full document

... the observation of Ramsey fringes, an oscillation in population transfer between the two states in the ...distribution. Bose-Einstein condensates comprise a macroscopic number of atoms in a ... See full document

... z iω/α e −iωt . (39) These asymptotic expressions are valid as long as the elementary excitations are sound waves with wave number (19). We show in the Appendix that this is the case sufficiently far away from the ... See full document

... In the examples considered, we find that the nucleation of vortices is crucially dependent on instabilities in the spec- trum of elementary excitations, as is known to be the case for condensates subject to ... See full document

... that Bose-Einstein Condensates (BECs) and degenerate Fermi gases are often used as a laboratory to study a host of phenomena from many different areas of ... See full document

... of Bose-Einstein condensates can be engineered through its in- teraction with localized Rydberg ...Rydberg excitations is a diagnostic tool for the ... See full document

... specific Bose-Einstein condensate system we investigated, which is of relevance for the implementation and control of quantum information processing in atom-light interfaced setups [4,15], but also in the ... See full document

... dimensional Bose systems in the sense that its mean field theory ...collective excitations depend on the spa- tial degree of ...one-dimensional condensates were successfully realised in a number of ... See full document

... of Bose-Einstein condensation in dilute alkali gases in 1995 [23, ...a Bose-Einstein condensate (BEC) emerged from Einstein's insightful synthe­ sis of the elucidation of photon statistics by ... See full document

... unstable Bose-Einstein ...elementary excitations in unstable condensates, to the best of our knowledge, despite the fundamental nature of the ...in Bose-Einstein ... See full document

... nonclassical depth of a single-mode system. It would, however, also be instructive to determine the evolution of proper coherence measures [140–144], which have re- cently been applied to infinite dimensional ... See full document

... two condensates with repulsive interaction ...trapped condensates can be unstable with respect to modes with complex frequencies ...elementary excitations with positive and negative energies or by ... See full document

... The failure to resolve the question on which the research here presented was focused indicates that there is still a great deal of work to be done on the question. The numerical script used to simulate the system seems ... See full document

... Magnetic Microtraps for Cavity QED, Bose Einstein Condensates, and Atom Optics Thesis by Benjamin L Lev In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy California Ins[.] ... See full document