Senior Quantum Engineer - Quantum Gates (Berkeley)

As a Senior Quantum Engineer for our Quantum Gates team, you will be a key contributor to the optimization of our gate-based, superconducting quantum processors. In this role, you will be responsible for improving the fidelity of single- and two-qubit gate fidelities, improving robustness and accuracy of calibration procedures, and more precisely measuring and mitigating sources of gate error. You will collaborate closely with cross-functional teams spanning hardware, control systems, research & development, and software to push the boundaries of quantum gate performance toward thresholds required for practical quantum computing and error correction.

Key Responsibilities

• Design and optimize calibration methods for both single- and two-qubit gates using advanced techniques such as pulse shaping, dynamical decoupling, and other error suppression strategies.
• Collaborate across diverse teams of expert engineers (fab, design, electronics, software, etc.) to turn proofs of concept for quantum gate calibration into robust, device-wide procedures.
• Characterize experimental devices, identify areas for improvement, and provide feedback to internal design and fabrication teams.
• Stay current with cutting-edge research, synthesize results from the literature, and implement state-of-the-art calibration tools, error diagnostics, and system optimization techniques to enhance gate performance and reduce error rates.
• Serve as a technical mentor, providing guidance and expertise for more junior engineers and researchers.

Required Qualifications

• PhD in Physics or similar applied scientific field.
• Demonstrated capabilities with Python in a scientific context.
• Experience calibrating and characterizing single- and two-qubit quantum gates in superconducting quantum devices.
• Expertise in the practical implementation of coherent quantum effects and control.
• Ability to thrive in a strongly collaborative environment, with a team-first mindset.
• Excellent communication skills.

Nice to have

• Familiarity with standard practices in DSP and RF signal engineering.
• Experience with quantum simulation frameworks like QuTip.
• Demonstrated ability to formulate, plan, prioritize, and execute novel research and development projects, potentially spanning multiple teams.
• Prior technical role in an industry or start-up environment.