ADVANCES IN NANOPHOTONICS II: International Summer School on Advances in Nanophotonics II
959(2007); http://dx.doi.org/10.1063/1.2821603View Description Hide Description
959(2007); http://dx.doi.org/10.1063/1.2821604View Description Hide Description
Nonlinear inequalities based on the quadratic Renyi entropy for mixed two‐qubit states are characterized on the Entropy‐Concurrence plane. This class of inequalities is stronger than Clauser‐Horne‐Shimony‐Holt (CHSH) inequalities and, in particular, are violated “in toto” by the set of Type I Maximally‐Entangled‐Mixture States (MEMS I). Renyi entropy is experimentally obtained by local measurements on two pairs of polarization‐entangled photons. The novel “phase marking” technique allows the selection of uncorrupted outcomes even with nondeterministic sources of entangled photons. Experimental data demonstrate the violation of entropic inequalities which are an example of nonlinear entanglement witnesses.
959(2007); http://dx.doi.org/10.1063/1.2821605View Description Hide Description
Nanochannel glass materials have the potential for numerous nanophotonic applications. Features as small as 10 nm can be created in an optically transparent glass matrix, in a large array format. Complex patterns can also be generated. The ability to fabricate complex optical structures at the nanoscale enables opportunities for new device fabrication and an ability to explore optical interactions at dimensions on the order of a wavelength or smaller. The fabrication, characterization and utility of nanochannel glass materials will be described.
959(2007); http://dx.doi.org/10.1063/1.2821606View Description Hide Description
We review experimental studies on left‐handed metamaterials operating at microwave frequencies. Left‐handed transmission is obtained from a composite metamaterial consisting of periodic split ring resonator and wire arrays. Phase measurements reveal that the left‐handed metamaterial has a negative phase velocity and negative refraction. The negative index metamaterial is capable of imaging subwavelength features with a resolution of
959(2007); http://dx.doi.org/10.1063/1.2821607View Description Hide Description
Scaling is the most important feature of Anderson localization. However, scaling arguments have always been qualitative. In this work we summarize our recent attempts to formulate a theory that allows engineering with the scaling theory of localization. This enables a quantitative comparison to many experiments that are now under investigation.
959(2007); http://dx.doi.org/10.1063/1.2821608View Description Hide Description
Quasicrystals are neither crystalline nor amorphous solids. They are aesthetically highly appealing and posses intriguing physical properties. Recently, three‐dimensional photonic quasicrystals have become available for the near‐infrared spectral region through nanofabrication. This opens the way for photonic transport measurements to understand the influence of symmetry onto transport properties. In this article we describe the fabrication via direct laser writing and silicon single inversion and the optical characterization via Laue‐diffraction experiments.
959(2007); http://dx.doi.org/10.1063/1.2821602View Description Hide Description
Nanophotonics—the manipulation of light with nanomaterials—is a booming subject, its success owing to the host of nanoscale fabrication techniques now at our disposal. However, for the characterization of such nanomaterials it is expedient to turn to other types of waves with a wavelength commensurate with the nanostructure in question. One such choice is acoustic waves of nanometre wavelength. The aim of this article is to provide an introduction to laser picosecond acoustics, a means by which gigahertz‐terahertz ultrasonic waves can be generated and detected by ultrashort light pulses. This method can therefore be used to characterize materials with nanometre spatial resolution. In this article we review the theoretical background for opaque single‐layer thin film isotropic samples with reference to key experiments. Solids including metals and semiconductors are discussed, although liquids and, conceivably, gases, are not excluded.