Deep subwavelength optical imaging using correlated nano-torches

The authors propose and numerically demonstrate an ultra-high resolution (wavelength/50∼40 nm at wavelength λ=2.08 μm, high-throughput (∼66%), and non-destructive optical lens with a large contrast-to-noise ratio, based on the notion of correlated nano-torches formed in a subwavelength metallic grating. The correlations between the torches also allow the determination of the complex refractive index of the sample

Three-dimensional metamaterials with an ultra-high effective refractive index over broad bandwidth

The authors introduce a general mechanism, based on electrostatic and magnetostatic considerations, for designing three-dimensional isotopic metamaterials that possess an enhanced refractive index over an extremely large frequency range. The mechanism allows nearly independent control of effective electric permittivity and magnetic permeability without the use of resonant elements

Strongly Correlated Two-Photon Transport in One-Dimensional Waveguide Coupled to A Two-Level System

We show that two-photon transport is strongly correlated in one-dimensional waveguide coupled to a two-level system. The exact S-matrix is constructed using a generalized Bethe-Ansatz technique. We show that the scattering eigenstates of this system include a two-photon bound state that passes through the two-level system as a composite single particle. Also, the two-level system can induce effective attractive or repulsive interactions in space for photons. This general procedure can be applied to the Anderson model as well.Comment: 12 pages. 3 figures. Accepted by Physical Review Letter

Deep subwavelength optical imaging using correlated nano-torches

The authors propose and numerically demonstrate an ultra-high resolution (wavelength/50∼40 nm at wavelength λ=2.08 μm, high-throughput (∼66%), and non-destructive optical lens with a large contrast-to-noise ratio, based on the notion of correlated nano-torches formed in a subwavelength metallic grating. The correlations between the torches also allow the determination of the complex refractive index of the sample

Quantum mechanical modeling of the multi-stage Stern\unicode{x2013}Gerlach experiment by Frisch and Segr\`e using the von Neumann equation

The multi-stage Stern\unicode{x2013}Gerlach experiment conducted by Frisch and Segr\`e has been modeled analytically using quantum mechanics by Majorana and revised by Rabi by including the hyperfine interaction. However, the theoretical predictions do not match the experimental observation well. Here, we numerically solve the standard quantum mechanical model, via the von Neumann equation, that includes the hyperfine interaction for the time evolution of the spin. The outcome is compared with the experimental observation and the predictions by Majorana, Rabi, and an alternative model called co-quantum dynamics. Thus far, the coefficients of determination from the standard quantum mechanical model, which does not use free parameters, are still below zero. Non-standard variants that improve the match are explored for discussion.Comment: 8 pages, 5 figure

Theory of single-photon transport in a single-mode waveguide coupled to a cavity containing a two-level atom

The single-photon transport in a single-mode waveguide, coupled to a cavity embedded with a two-leval atom is analyzed. The single-photon transmission and reflection amplitudes, as well as the cavity and the atom excitation amplitudes, are solved exactly via a real-space approach. It is shown that the dissipation of the cavity and of the atom respectively affects distinctively on the transport properties of the photons, and on the relative phase between the excitation amplitudes of the cavity mode and the atom.Comment: 28 pages, 6 figures. Accepted by Physical Review A (2009

Exponential suppression of thermal conductance using coherent transport and heterostructures

We consider coherent thermal conductance through multilayer photonic crystal heterostructures, consisting of a series of cascaded non-identical photonic crystals. We show that thermal conductance can be suppressed exponentially with the number of cascaded crystals, due to the mismatch between photonic bands of all crystals in the heterostructure.Comment: 15 pages, 4 figure