We are developing high quality factor whisperinggallery mode resonator (WGMR) disks for use in quantum information experiments. Our polished lithium niobate disks achieved a quality factors of Q > 10. We observed the generation of λ = 532 nm through Type-I, noncritically phase matched second harmonic generation in our whispering-gallery mode resonator disk. Unexpectedly, we observed this second...

Mode conversion occurs when a wave passes through a region where the sound and Alfvén speeds are equal. At this point there is a resonance, which allows some of the incident wave to be converted into a different mode. We study this phenomenon in the vicinity of a twodimensional, coronal null point. As a wave approaches the null it passes from lowto high-β plasma, allowing conversion to take pla...

The condition for axial mode operation in helical antenna according to the classical design data is the helix circumference to wavelength ratio (C/ ) must be in a range of 0.8 to 1.2. In this paper the C/ ratio is reduced to 0.2 for the wavelength 125 mm. It is achieved by loading the helix in a back cavity. The design concept of helical resonator filter is used for design of this antenna. If t...

PARITOSH MANURKAR,* NITIN JAIN, MICHAEL SILVER, YU-PING HUANG, CARSTEN LANGROCK, MARTIN M. FEJER, PREM KUMAR, AND GREGORY S. KANTER Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208, USA Department of Physics and Engineering Physics, Stevens Institute of Technology, Hoboken, New Jersey 07030, USA E. L. Ginzton Laboratory, Stanford Unive...

Electromagnetic waves are ideal candidates for transmitting information in a quantum network as they can be routed rapidly and efficiently between locations using optical fibres or microwave cables. Yet linking quantum-enabled devices with cables has proved difficult because most cavity or circuit quantum electrodynamics systems used in quantum information processing can only absorb and emit si...

We have recently shown that in a highly magnetized neutron star atmospheric plasma, vacuum polarization can induce resonant conversion of photon polarization modes via a mechanism analogous to MSW neutrino oscillation. In a recent paper Ozel has dismissed this mode conversion effect as " mistakes ". Here we explain why our arguments/calculations of this effect are correct.

We study ray dynamics in a square billiard that allows mode conversion and is parametrised by κ, the ratio of the velocities of the two modes. At κ → 1+, conversion occurs at every reflection and periodic orbits proliferate exponentially. As κ increases beyond √ 2, the collection of daughter rays explore only three momentum directions and mode conversion is progressively inhibited. We provide a...

Nanophotonic plasmon circuits may play important roles in next-generation information technology as semiconductor-based electronics is approaching the physical limit. The functions of such circuits rely on the rigorous control of plasmon propagation. One important aspect of such control is controlling the conversion of different plasmon modes for designed plasmon routing in complex nanophotonic...