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High-Density Flexible Cables for Superconducting Electronics

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: W912CG22P0004
Agency Tracking Number: D21I-20-0279
Amount: $174,970.96
Phase: Phase I
Program: SBIR
Solicitation Topic Code: HR001121S0007-20
Solicitation Number: HR001121S0007.I
Solicitation Year: 2021
Award Year: 2022
Award Start Date (Proposal Award Date): 2022-01-07
Award End Date (Contract End Date): 2022-08-06
Small Business Information
2081 Center St Ste 7
Berkeley, CA 94704-1204
United States
DUNS: 081202076
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Alexei Marchenkov
 (415) 583-9897
Business Contact
 Alexei Marchenkov
Phone: (415) 583-9897
Research Institution

To address DARPA’s need to create a new type of high-density data cable for superconducting electronics applications which has high density, low attenuation, low crosstalk, and low heat load, Bleximo Corp proposes to develop and test, at cryogenic temperatures, cables for a full-stack robust low-loss, low thermal conductance, modular, scalable input/output RF cable on flexible substrates, including: a.) Optimization of properties of cables (insertion loss and heat load) for each temperature interval, b.) Development of matched interconnects with SMA and G3PO connectors to interface with COTS components, primarily at room and 10 mK temperatures, c.) Development of matched interconnects with printed circuit boards for use with surface-mounted filtering and signal routing components as well as quantum processors and other superconducting circuits, d.) Development of integrated attenuators for control and readout lines, e.) Optimization of the lines for noise temperature balance at the mixing chamber of a dilution refrigerator and the amount of dissipated heat, f.) Ensure design compatibility with existing commercial DR systems, g.) Study alternative manufacturing methods, including 3D printing, and h.) Manufacture and measure properties of 15 cm long 3-channel ribbon cables at millikelvin temperatures , including RF signal transmission properties and cross-talk between channels.  Our preliminary simulations indicate that both the target primary and secondary metrics required in this Program can be achieved in this design with appropriate selection of metallic materials.  

* Information listed above is at the time of submission. *

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