Applied Scientist, Superconducting Digital and Cryogenic Control Electronics,Center for Quantum Computing, Physical Design and Simulation, Enabling Technologies

The Amazon Web Services (AWS) Center for Quantum Computing (CQC) is seeking a Senior Applied Scientist to research and design cryogenic control hardware for large-scale quantum processors, with an emphasis on superconducting digital circuits. Control and reading out orders of magnitude more qubits than today's systems demands rethinking where classical control lives and what technology implements it; you will design and model superconducting digital logic (e.g., single-flux-quantum-family circuits) and related cryogenic electronics, evaluate them against the wiring, power, and thermal budgets of a scaled system, and co-design control approaches with the qubit devices they serve. You will carry designs from concept through simulation, layout, design review, and fabrication handoff, and your evaluations will inform which control-electronics directions the organization invests in.

Key job responsibilities

• Design and simulate superconducting digital circuits and cryogenic control/readout electronics for scalable qubit control
• Develop and validate Josephson-junction circuit models, timing and margin analyses, and verification methodology for superconducting digital designs
• Quantify system-level trade-offs — wiring count, power dissipation at each cryogenic stage, latency, footprint — across candidate control architectures, and communicate recommendations
• Co-design control interfaces with qubit-device colleagues so control electronics and quantum devices are developed as one system
• Deliver design artifacts through the organization's design-request and design-review processes, including tapeout-ready layouts and verification reports
• Present results internally and, where appropriate, publish in peer-reviewed venues

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