Results 31 to 40 of about 144,548 (197)

Topological Objects in Two-component Bose-Einstein Condensates

, 2005
We study the topological objects in two-component Bose-Einstein condensates. We compare two competing theories of two-component Bose-Einstein condensate, the popular Gross-Pitaevskii theory and the recently proposed gauge theory of two-component Bose ...
A. Abrikosov, F. Lin, G. Volovik, Hyojoong Khim, L. Kapitansky, M. Metlitski, Pengming Zhang, T. H. R. Skyrme, T. H. R. Skyrme, Y. M. Cho, Y. Makhlin   +10 more
core   +1 more source

Impurity in a Bose-Einstein Condensate and the Efimov Effect. [PDF]

Physical Review Letters, 2015
We investigate the zero-temperature properties of an impurity particle interacting with a Bose-Einstein condensate (BEC), using a variational wave function that includes up to two Bogoliubov excitations of the BEC.
J. Levinsen, M. Parish, G. Bruun
semanticscholar   +1 more source

Bose-Einstein condensation of indirect excitons in coupled quantum wells

, 2003
We study the ground-state properties of a quasi-two-dimensional Bose-Einstein condensate of indirect excitons, which are confined in an anisotropic harmonic potential. Incorporating the interactions, we calculate the order parameter variationally.
Kavoulakis, G. M.
core   +1 more source

A Dicke Type Model for Equilibrium BEC Superradiance

, 2004
We study the effect of electromagnetic radiation on the condensate of a Bose gas. In an earlier paper we considered the problem for two simple models showing the cooperative effect between Bose-Einstein condensation and superradiance.
Andreev A V, André Verbeure, Brankov J G, Fannes M, Girardeau M, Hepp K, Joseph V Pulé, Pulé J V, Robinson D W, Valentin A Zagrebnov, van den Berg M   +10 more
core   +5 more sources

Cavity Optomechanics with a Bose-Einstein Condensate [PDF]

Science, 2008
Cavity optomechanics studies the coupling between a mechanical oscillator and the electromagnetic field in a cavity. We report on a cavity optomechanical system in which a collective density excitation of a Bose-Einstein condensate serves as the ...
F. Brennecke, S. Ritter, T. Donner, T. Esslinger   +3 more
semanticscholar   +1 more source

A fundamental limit for integrated atom optics with Bose-Einstein condensates

, 2003
The dynamical response of an atomic Bose-Einstein condensate manipulated by an integrated atom optics device such as a microtrap or a microfabricated waveguide is studied.
A.E. Leanhardt, C. Henkel, D. Müller, D.S. Petrov, E. Andersson, E. Braaten, E. Braaten, E.A. Hinds, Ewan M. Wright, F.Kh. Abdullaev, H. Shi, Han Pu, J. Fortagh, J. Fortagh, J. Reichel, J.D. Weinstein, J.H. Thywissen, M. Olshanii, M. Ueda, Michael W. Jack, N.H. Dekker, P.F. Bedaque, Pierre Meystre, R. Folman, S. Dyachenko, Thorsten Köhler, V.E. Zakharov, Weiping Zhang   +27 more
core   +1 more source

Quasiparticle Properties of a Mobile Impurity in a Bose-Einstein Condensate. [PDF]

Physical Review Letters, 2015
We develop a systematic perturbation theory for the quasiparticle properties of a single impurity immersed in a Bose-Einstein condensate. Analytical results are derived for the impurity energy, effective mass, and residue to third order in the impurity ...
Rasmus S. Christensen, J. Levinsen, G. Bruun   +2 more
semanticscholar   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Directional Flow of Confined Polaritons in CrSBr

Advanced Materials, EarlyView.
CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak, Sichao Yu, Jaime Abad‐Arredondo, Biswajit Datta, Andy Cruz, Sorah Fischer, Kseniia Mosina, Zdeněk Sofer, Antonio I. Fernández‐Domínguez, Francisco J. Garcia‐Vidal, Vinod M. Menon   +10 more
wiley   +1 more source

Periodic Quantum Tunneling and Parametric Resonance with Cigar-Shaped Bose-Einstein Condensates

, 2002
We study the tunneling properties of a cigar-shaped Bose-Einstein condensate by using an effective 1D nonpolynomial nonlinear Schr\"odinger equation (NPSE).
A Parola, Arnold V I, Fribel S, Gross E P, L Reatto, L Salasnich, Landau L D, Pitaevskii L P, Pitaevskii L P, Salasnich L, Salasnich L, Zapata I   +11 more
core   +1 more source