In this research, we propose and design an acoustic metamuffler (AMM) by coupling a microperforated plate composite waveguide formed main Helmholtz resonator. The proposed mechanism deliberately designed structure are conducive to generating multimode resonances that help improve the absorption effect lead broadband (4 octaves) sound insulation. We develop effective circuit model analytically p...

Fluctuations of the qubit frequencies are one major problems to overcome on way scalable quantum computers. Of particular importance fluctuations with a correlation time that exceeds decoherence due decay and dephasing by fast processes. The statistics can be characterized measuring correlators outcomes periodically repeated Ramsey measurements. We describe dynamics during measurements evaluate...

Abstract We revisit low frequency coherent Raman spectroscopy (LF-CRS) and present a unified theoretical background that provides consistent physical pictures of LF-CRS signal generation. Our general framework allows to compute the noise ratio in multitude possible LF-CRS, more generally CRS, experimental implementations both spectral time domain.