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DOE OSTI · 1722961

Addressing qubits with a software-defined radio FPGA (Full Technical Final Report)

Poyneer, Lisa A.
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Abstract

Superconducting transmons can be configured as qubits and can also be used for weak signal axion searches. During a prior LDRD (17-ERD-006), a robust capability for system simulation and analysis, algorithm development, algorithm to FPGA workflow and experimental measurements was developed. During that project it was determined that a new software-defined radio FPGA would be a significant improvement in cost, simplicity, and software maintainability over the X6-1000M FPGA plus RF front-end system that had been used. In this Feasibility Study, we successfully developed the interface to the new NI USRP-2954R SDR platform, generated and optimized the VHDL of the existing algorithms, and experimentally tested the new FPGA system on real qubit in the laboratory. These tests showed it had the same SNR on weak measurements as the prior FPGA.

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Poyneer, Lisa A.. 2020-11-23. Addressing qubits with a software-defined radio FPGA (Full Technical Final Report). https://doi.org/10.2172/1722961

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