Showing papers by "N.J. van Druten published in 2012"
TL;DR: In this paper, the exact Yang-Yang solutions for the one-dimensional Bose gas were used to enable accurate kinetic energy thermometry based on the root-mean-square width of an experimentally measured momentum distribution.
Abstract: We describe the use of the exact Yang-Yang solutions for the one-dimensional Bose gas to enable accurate kinetic-energy thermometry based on the root-mean-square width of an experimentally measured momentum distribution. Furthermore, we use the stochastic projected Gross-Pitaevskii theory to provide a quantitative description of the full momentum distribution measurements of Van Amerongen et al. [Phys. Rev. Lett. 100, 090402 (2008)]. We find the fitted temperatures from the stochastic projected Gross-Pitaevskii approach are in excellent agreement with those determined by Yang-Yang kinetic-energy thermometry.
43 citations
19 Mar 2012
TL;DR: In this paper, two approaches for developing a quantum information science platform, based on microtrap arrays on a magnetic-film atom chip, are discussed, one using Rydberg mediated interactions, the other simulating the Hubbard model in sub-wavelength lattices.
Abstract: We discuss two approaches for developing a quantum information science platform, based on microtrap arrays on a magnetic-film atom chip. One uses Rydberg mediated interactions, the other simulates the Hubbard model in sub-wavelength lattices.
21 citations
TL;DR: In this article, the authors study and classify the possible subsequent dynamics over a wide variety of parameters spanned by the trap strength and by the inter-to intra-component interaction ratio.
Abstract: In the study of trapped two-component Bose gases, a widely used dynamical protocol is to start from the ground state of a one-component condensate and then switch half the atoms into another hyperfine state. The slightly different intra-component and inter-component interactions can then lead to highly nontrivial dynamics. We study and classify the possible subsequent dynamics, over a wide variety of parameters spanned by the trap strength and by the inter- to intra-component interaction ratio. A stability analysis suited to the trapped situation provides us with a framework to explain the various types of dynamics in different regimes.
2 citations