8 research outputs found
Design of deeply cooled ultra-low dissipation amplifier and measuring cell for quantum measurements with a microwave single-photon counter
The requirements and details of designing a measuring cell and
low-back-action deeply-cooled amplifier for quantum measurements at 10 mK are
discussed. This equipment is a part of a microwave single-photon counter based
on a superconducting flux qubit. The high electron mobility transistors (HEMTs)
in the amplifier operate in unsaturated microcurrent regime and dissipate only
1 microwatt of dc power per transistor. Simulated amplifier gain is 15 dB at
450 MHz with a high-impedance (~5 kOhm signal source and standard 50-Ohm
output.Comment: 10 pages, 7 figures. To be published in Fizika Nizkikh Temperatur
(Low Temperature Physics) vol. 50, No.1 (2024
SQUIDs based on self-shunted MoRe-Si(W)-MoRe Josephson junctions
session: Nanoscale PhysicsInternational audienc