1205.4072 (S. Blanvillain et al.)

Suppressing On-Chip EM Crosstalk for Spin Qubit Devices    [PDF]

S. Blanvillain, J. I. Colless, D. J. Reilly, H. Lu, A. C. Gossard

We report the development and performance of on-chip interconnects designed to suppress electromagnetic (EM) crosstalk in spin qubit device architectures with the large number of gate electrodes needed for multi- qubit operation. Our design improves the performance of typical device interconnects via the use of minia- turised ohmic contacts and interspersed ground guards. Low temperature measurements and numerical simulation confirm that control and readout signal crosstalk can be suppressed to levels of order 1%, from dc to 1 GHz.

View original: http://arxiv.org/abs/1205.4072