Phys. Rev. Focus24, 23 (2009) – Published December 15, 2009
A method combining a traditional laser pump-probe experiment with the detection of high-frequency sound and thermal waves reveals the microscopically bumpy interface between two apparently smooth surfaces.
A theoretical analysis of recent experiments suggests that a key feature of a topological quantum computer—the unusual statistics of quasiparticles in the quantum Hall effect—may finally have been observed.