We report measurements of Aharonov-Bohm oscillations in normal metal rings in the presence of highfrequency electromagnetic fields. The power dependence of the decoherence time scale P agrees well with the anticipated power law P −1/5 when the field-induced decoherence rate ac −1 is large compared to the intrinsic decoherence rate o , measured in the absence of external fields. As theoretically...

We consider classical and quantum electromagnetic fields in a threedimensional (3D) cavity and in a waveguide with oscillating boundaries of the frequency Ω. The photons created by the parametric resonance are distributed in the wave number space around Ω/2 along the axis of the oscillation. When classical waves propagate along the waveguide in the one direction, we observe the amplification of...

We demonstrate high-contrast state detection of a superconducting flux qubit. Detection is realized by probing the microwave transmission of a nonlinear resonator, based on a SQUID. Depending on the driving strength of the resonator, the detector can be operated in the monostable or the bistable mode. The bistable operation combines high-sensitivity with intrinsic latching. The measured contras...

We discuss the cosmological degeneracy between the Hubble parameter H(z), the age of the universe and cosmological parameters describing simple variations from the minimal ΛCDM model. We show that independent determinations of the Hubble parameter H(z) such as those recently obtained from ages of passively evolving galaxies, combined with Cosmic Microwave Background data (WMAP 5years), provides...

This paper presents an accurate and robust time-domain electromagnetic model for microwave components of integrated circuits. The time-domain model has been validated on different structures such as metallic waveguides, planer lines and the transition of waveguide-microstrip line under harmonic oscillation excitation. The results obtained from simulation were compared to the experimental test r...