Senior Two-Qubit Gate Calibration Engineer

Rigetti; Berkeley (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Rigetti Computing seeks an experienced Quantum Engineer to drive two-qubit gate performance on tunable-coupler superconducting processors. You will design, execute, and interpret experiments to propel gate fidelity, identify error sources, and implement robust calibration strategies at scale.

You will collaborate across device design, fabrication, control systems, software, theory, and R&D to translate concepts into robust procedures, publish findings, and guide design decisions for large qubit

Qualifications

• PhD in Physics, Applied Physics, Electrical Engineering, or a related field.
• Significant hands-on experience calibrating and characterizing two-qubit gates on superconducting quantum devices; tunable couplers a strong plus.
• Deep understanding of gate design, pulse engineering, and decoherence mechanisms; track record linking diagnostics to fidelity improvements.
• Ability to independently execute complex experimental efforts from concept to validated result.
• Strong Python skills in a scientific context.
• Excellent communication and a team-oriented mindset.
• Experience with quantum simulation frameworks such as QuTiP.
• Experience deploying calibration across large multi-qubit processors in an industrial or startup setting.
• Familiarity with randomized benchmarking variants, gate set tomography, cycle benchmarking, or other scalable error diagnostics.
• Publication record or demonstrated results in high-fidelity entangling gates, error suppression, or quantum control.
• Experience mentoring junior scientists or leading small technical teams.

Responsibilities

• Lead experimental programs to characterize, calibrate, and optimize two-qubit gates on tunable-coupler devices, from single-pair physics investigations to full-processor deployment.
• Identify gate-error bottlenecks (e.g., coherent control error, decoherence, leakage, crosstalk, TLS interactions) for single-pair as well as large-scale systems and isolate their physical origin through targeted experiments, benchmarking, and simulation.
• Develop and harden calibration methods using techniques such as optimal pulse shaping, dynamical decoupling, and other error suppression strategies, with an emphasis on robustness and automation at scale.
• Develop and improve metrology for full-processor Hamiltonian and characteristic extraction and correlate with gate performance. Turn that knowledge into actionable feedback for device design, fabrication, and control hardware teams, and drive those changes to closure.
• Prepare novel Rigetti devices for use by internal applications development teams and external deployment.
• Stay current with the literature and convert state-of-the-art techniques into working capability on production hardware.
• Contribute to the field of superconducting quantum computing by converting relevant findings into high-quality publications.

Skills

Python

Experiment design

Communication

Autonomy

Education

PhD in Physics / Applied Physics / Electrical Engineering

Tools

QuTiP

Job description

Rigetti Computing seeks an experienced Quantum Engineer to drive two-qubit gate performance on tunable-coupler superconducting processors. You will design, execute, and interpret experiments to propel gate fidelity, identify error sources, and implement robust calibration strategies at scale.

You will collaborate across device design, fabrication, control systems, software, theory, and R&D to translate concepts into robust procedures, publish findings, and guide design decisions for large qubit