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QiCells: A Modular RFSoC-based Approach to Interface Superconducting Quantum Bits

Gebauer, Richard ORCID iD icon 1; Karcher, Nick 1; Güler, Mehmed; Sander, Oliver 1
1 Institut für Prozessdatenverarbeitung und Elektronik (IPE), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Quantum computers will be a revolutionary extension of the heterogeneous computing world. They consist of many quantum bits (qubits) and require a careful design of the interface between the classical computer architecture and the quantum processor. For example, even single nanosecond variations of the interaction may have an influence on the quantum state. Designing a tailored interface electronics is therefore a major challenge, both in terms of signal integrity with respect to single channels, as well as the scaling of the signal count.

We developed such an interface electronics, an RFSoC-based qubit control system called QiController. In this paper, we present the modular FPGA firmware design of our system. It features so-called digital unit cells, or QiCells. Each cell contains all the logic necessary to interact with a single superconducting qubit, including a custom-built RISC-V-based sequencer. Synchronization and data exchange between the cells is facilitated using a special star-point structure. Versatile routing and frequency-division multiplexing of generated signals between QiCells and converters are also supported. High-level programmability is provided using a custom Python-based description language and an associated compiler. ... mehr


Postprint §
DOI: 10.5445/IR/1000155498
Veröffentlicht am 06.02.2023
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 10.05.2023
Sprache Englisch
Identifikator ISSN: 1936-7406, 1936-7414
KITopen-ID: 1000155498
HGF-Programm 47.12.01 (POF IV, LK 01) Advanced Solid-State Qubits and Qubit Systems
Erschienen in ACM Transactions on Reconfigurable Technology and Systems
Verlag Association for Computing Machinery (ACM)
Band 16
Heft 2
Seiten Art.-Nr.: 32
Vorab online veröffentlicht am 26.12.2022
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