Inducing Vortices in a Bose-Einstein Condensate using light beams with orbital angular momentum
نویسندگان
چکیده
منابع مشابه
Inducing vortices in a Bose-Einstein condensate using holographically produced light beams.
In this paper we demonstrate a technique that can create non-equilibrium vortex configurations with almost arbitrary charge and geometry in a Bose-Einstein condensate. We coherently transfer orbital angular momentum from a holographically generated light beam to a 87Rb condensate using a two-photon stimulated Raman process. Using matter wave interferometry, we verify the phase pattern imprinted...
متن کاملElementary Excitations of a Bose-Einstein Condensate in an Effective Magnetic Field
We calculate the low energy elementary excitations of a Bose-Einstein Condensate in an effective magnetic field. The field is created by the interplay between light beams carrying orbital angular momentum and the trapped atoms [1]. We examine the role of the homogeneous magnetic field, familiar from studies of rotating condensates, and also investigate spectra for vector potentials with a more ...
متن کاملQuantized rotation of atoms from photons with orbital angular momentum.
We demonstrate the coherent transfer of the orbital angular momentum of a photon to an atom in quantized units of variant Planck's over 2pi, using a 2-photon stimulated Raman process with Laguerre-Gaussian beams to generate an atomic vortex state in a Bose-Einstein condensate of sodium atoms. We show that the process is coherent by creating superpositions of different vortex states, where the r...
متن کاملVortex phase qubit: generating arbitrary, counterrotating, coherent superpositions in Bose-Einstein condensates via optical angular momentum beams.
We propose a scheme for the generation of arbitrary coherent superpositions of vortex states in Bose-Einstein condensates (BEC) using the orbital-angular-momentum states of light. We devise a scheme to generate coherent superpositions of two such counterrotating states of light using well-known experimental techniques. We show that a specially designed Raman scheme allows for transfer of the op...
متن کاملArbitrary coherent superpositions of quantized vortices in Bose-Einstein condensates via orbital angular momentum of light
We recently proposed a scheme for the creation of coherent superpositions of vortex states in Bose-Einstein condensates BECs using orbital angular momentum OAM states of light Phys. Rev. Lett. 95, 173601 2005 . Here we discuss further technical details of the proposal, provide an alternative, time-reversalsymmetric scheme for transfer of a superposition of OAM states of light to the BEC via a p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007