Browsing by Keywords "BoseEinstein condensation"
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GroundState properties and collective excitations in a 2D BoseEinstein condensate with gravitylike interatomic attraction
(Springer New York LLC, 2008)We study the groundstate properties of a BoseEinstein condensate (BEC) with the shortrange repulsion and gravitylike 1/r interatomic attraction in twodimensions (2D). Using the variational approach, we obtain the ... 
Groundstate properties, vortices, and collective excitations in a twodimensional BoseEinstein condensate with gravitylike interatomic attraction
(The American Physical Society, 2008)We study the groundstate properties of a BoseEinstein condensate with shortrange repulsion and gravitylike 1/r interatomic attraction in twodimensions (2D). Using the variational approach we obtain the groundstate ... 
Lowtemperature thermodynamics of finite and discrete quartic quantum oscillator in one dimension
(Bilkent University, 1999)I.' this work we examined a quartic Hamiltonian using two different approaches. We first introduced a meanfield Gaussian approximation in order to handle this Hamiltonian analytically and observed that this approximation is ... 
NonHermitian matterwave mixing in BoseEinstein condensates: Dissipationinduced amplification
(American Physical Society, 2017)We investigate the nonlinear scattering dynamics in interacting atomic BoseEinstein condensates under nonHermitian dissipative conditions. We show that, by carefully engineering a momentumdependent atomic loss profile, ... 
Photonic band gap in the triangular lattice of BoseEinsteincondensate vortices
(2007)We investigate the photonic bands of an atomic BoseEinstein condensate with a triangular vortex lattice. Index contrast between the vortex cores and the bulk of the condensate is achieved through the enhancement of the ... 
Quantum correlated light pulses from sequential superradiance of a condensate
(2009)We discover an inherent mechanism for entanglement swap associated with sequential superradiance from an atomic BoseEinstein condensate. Based on careful examinations with both analytical and numerical approaches, we ... 
Quantum Dynamics of LongRange Interacting Systems Using the PositiveP and GaugeP Representations
(American Physical Society, 2017)We provide the necessary framework for carrying out stochastic positiveP and gaugeP simulations of bosonic systems with longrange interactions. In these approaches, the quantum evolution is sampled by trajectories in ... 
Raman superradiance and spin lattice of ultracold atoms in optical cavities
(IOP Institute of Physics Publishing, 2013)We investigate the synthesis of a hyperfine spin lattice in an atomic BoseEinstein condensate, with two hyperfine spin components, inside a onedimensional highfinesse optical cavity, using offresonant superradiant Raman ... 
Rydberg aggregates
(Institute of Physics Publishing, 2018)We review Rydberg aggregates, assemblies of a few Rydberg atoms exhibiting energy transport through collective eigenstates, considering isolated atoms or assemblies embedded within clouds of cold groundstate atoms. We ... 
Strongly interacting onedimensional Bose condensates
(Bilkent University, 2000)Recent observation of BoseEinstein condensation in dilute alkali gzises led to a great interest in this area both experimentally and theoretically. The most important characteristics of a BoseEinstein condensate is ... 
Twodimensional bosonfermion mixtures in harmonic traps
(Elsevier Science B.V., 2003)The density profiles of bosonic and fermionic components in a system of trapped twodimensional (2D) bosonfermion (BF) mixture are studied. We employ the variational approach to minimize the total energy functional of the ... 
A variational approech to stationary and rotating BoseEinstein condensates
(Bilkent University, 2006)After the experimental demonstration of BoseEinstein condensation (BEC) in alkali gases [6, 7, 18], the number of theoretical and experimental papers on ultracold atomic physics increased enormously [48]. BEC experiments ... 
Vortex lattice of a BoseEinstein condensate as a photonic band gap material
(IOP Institute of Physics Publishing, 2009)Photonic crystal behavior of a rotating BoseEinstein condensate with a triangular vortex lattice is reviewed and a scheme for getting much wider band gaps is proposed. It is shown that photonic band gaps can be widened ... 
Vortex lattices in dipolar twocompenent BoseEinstein condensates
(American Physical Society, 20140221)We consider a rapidly rotating twocomponent BoseEinstein condensate with shortrange swave interactions as well as dipolar coupling. We calculate the phase diagram of vortex lattice structures as a function of the ...