Negative-Index Media for Matter-Wave Optics

Dynamics of evanescent matter waves in negative-index media

Semi-evanescent and evanescent matter-waves produced by an atom wave packet impinging a repulsive barrier can be back-refracted and reconstructed by the application of negative-index “comoving” potential pulses. One shows that those collapses and revivals generate a matter wave confined on both sides of the barrier border (“surface matter wave”) and should be observable via the retardation of a...

Resolving the wave vector in negative refractive index media.

We address the general issue of resolving the wave vector in complex electromagnetic media including negative refractive media. This requires us to make a physical choice of the sign of a square root imposed merely by conditions of causality. By considering the analytic behavior of the wave vector in the complex plane, it is shown that there are a total of eight physically distinct cases in the...

Broadband, Volumetric Negative-Refractive-Index Media

Broadband, Volumetric Negative-Refractive-Index Media by Scott M. Rudolph Chair: Anthony Grbic Since their invention, negative-refractive-index (NRI) media have been plagued by three primary limitations: narrow bandwidth, high loss and polarization dependence. In this thesis, each of these problems is addressed. First, a new metamaterial topology that achieves negative permeability over a broad...

Negative index media in microwave waveguide

Microwave waveguide measurements of negative index media (NIM) are reported. Accurate determination of the frequency variation of the complex scattering parameters yields the refractive index " ' ) ( ~ in n n + = ω for the NIM with ' n varying between -3.9 to -0.3 in the passband region of 9.7-10.5 GHz. The results show that transmission is optimized for 1 ' − ≈ n and small " n . PACS numbers: ...

Nonlinear Atom Optics: Multi-wave mixing with matter waves