Printed circuit board metal powder filters for low electron temperatures
Abstract
We report the characterisation of printed circuit boards (PCB) metal powder filters and their influence on the effective electron temperature which is as low as 22 mK for a quantum dot in a silicon MOSFET structure in a dilution refrigerator. We investigate the attenuation behaviour (10 MHz–20 GHz) of filter made of four metal powders with a grain size below 50 μm. The room-temperature attenuation of a stainless steel powder filter is more than 80 dB at frequencies above 1.5 GHz. In all metal powder filters, the attenuation increases with temperature. Compared to classical powder filters, the design presented here is much less laborious to fabricate and specifically the copper powder PCB-filters deliver an equal or even better performance than their classical counterparts.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 01, 2013
- Source ID
- 10.1063/1.4802875
Entities
People
- Andrew S. Dzurak
- Filipp Mueller
- Floris A. Zwanenburg
- Matthias Brauns
- Nai Shyan Lai
- Raymond N. Schouten
- Tian Gang
- Wee Han Lim
- Wilfred G. Van Der Wiel
Organizations
- Army Research Office
- Delft University of Technology
- University of New South Wales
- University of Twente