29 citations · 101 across the 12 of their papers we have counts for
12 papers
Short-Time Enhanced Decay of Coherent Excitations in Bose-Einstein Condensates
Nir Bar-Gill, Eitan E. Rowen, Gershon Kurizki +1
We study, both experimentally and theoretically, short-time modifications of the decay of excitations in a Bose-Einstein Condensate (BEC) embedded in an optical lattice. Strong enh…
Damping of bulk excitations over an elongated BEC - the role of radial modes
E. E. Rowen, N. Bar-Gill, R. Pugatch +1
We report the measurement of Beliaev damping of bulk excitations in cigar shaped Bose Einstein condensates of atomic vapor. By using post selection, excitation line shapes of the t…
Spectroscopy of Strong-Pulse Superradiance in a Bose-Einstein condensate
Nir Bar-Gill, Eitan E. Rowen, Nir Davidson
We study experimentally superradiance in a Bose-Einstein condensate using a two-frequency pump beam. By controlling the frequency difference between the beam components, we measure…
Identifying the Bose glass phase
R. Pugatch, N. Bar-gill, N. Katz +2
Introducing disorder into the Bose-Hubbard model at integer fillings leads to a Bose glass phase, along with the Mott insulator and superfluid phases. We suggest a new order parame…
Quantum Phases of Ultra Cold Bosons in Incommensurate 1D Optical Lattices
Nir Bar-Gill, Rami Pugatch, Eitan Rowen +2
We study theoretically a BEC loaded into an optical lattice in the tight-binding regime, with a second, weak incommensurate lattice acting as a perturbation. We find, using direct…
Dressed state approach to matter wave mixing of bosons
E. Rowen, R. Ozeri, N. Katz +2
A dressed state approach to mixing of bosonic matter waves is presented. Two cases are studied using this formalism. In the first, two macroscopically populated modes of atoms (two…