Noise properties of superconducting coplanar waveguide microwave resonators

Material for “ Surface loss simulations of superconducting coplanar waveguide resonators ”

coplanar waveguide resonators” J. Wenner, R. Barends, R. C. Bialczak, Yu Chen, J. Kelly, Erik Lucero, Matteo Mariantoni, A. Megrant, P. J. J. O’Malley, D. Sank, A. Vainsencher, H. Wang, 2 T. C. White, Y. Yin, J. Zhao, A. N. Cleland, and John M. Martinis a) Department of Physics, University of California, Santa Barbara, CA 93106, USA Department of Physics, Zhejiang University, Hangzhou 310027, C...

Surface loss simulations of superconducting coplanar waveguide resonators

Losses in superconducting planar resonators are presently assumed to predominantly arise from surface-oxide dissipation, due to experimental losses varying with choice of materials. We model and simulate the magnitude of the loss from interface surfaces in the resonator and investigate the dependence on power, resonator geometry, and dimensions. Surprisingly, the dominant surface loss is found ...

Sputtered TiN films for superconducting coplanar waveguide resonators

S. Ohya,1, a) B. Chiaro,2 A. Megrant,2, 3 C. Neill,2 R. Barends,2 Y. Chen,2 J. Kelly,2 D. Low,2 J. Mutus,2 P. J. J. O’Malley,2 P. Roushan,2 D. Sank,2 A. Vainsencher,2 J. Wenner,2 T. C. White,2 Y. Yin,2 B. D. Schultz,1 C. J. Palmstrøm,1, 3 B. A. Mazin,2 A. N. Cleland,2 and John M. Martinis2, b) Department of Electrical and Computer Engineering, University of California, Santa Barbara, California...

Optimized coplanar waveguide resonators for a superconductor–atom interface

Miniaturization of superconducting coplanar waveguide bandpass filters by cross coupling

For more size reduction of the high temperature superconducting coplanar waveguide (CPW) bandpass filter (BPF), we introduce the design method of the meanderline CPW quarter-wavelength resonator BPF. The exact admittanceand susceptance-inverters are calculated by using the 2.5-dimensional electromagnetic field simulator. The prototype YBCO miniaturized BPF (center frequency =10GHz, n=3, band wi...