qubitsok.com
Cut Noise. Work Quantum.
Americas, United States, Louisville
•
Posted 22 days ago
🏢 Infleqtion
Role Type
Role Focus
Seniority
Employer Type
Visa / Relocation Details
Candidates must be a U.S. Person (U.S. citizen, U.S. lawful permanent resident) to comply with U.S. Export Control laws and regulations.
This role involves designing and delivering next-generation photonic integrated circuits (PICs) and related subassemblies for quantum products. The engineer will own the entire PIC design lifecycle, from translating system requirements into photonic building blocks to performing rigorous modeling, layout, and verification. A key aspect is utilizing simulation-driven design and rapid experimental feedback to meet aggressive performance and reliability specifications. This position requires translating system requirements into manufacturable photonic building blocks.
Key Responsibilities
Own and deliver high-performance photonic component designs and PIC layouts that meet aggressive performance specifications like loss, bandwidth, and yield.
Build workflows to accelerate design cycles, integrating PDKs, reusable parameterized cells, and verification automation.
Manage the tapeout process, including coordination, foundry alignment, mask submission deliverables, and managing post-tapeout debug loops.
Define test plans, review experimental data, troubleshoot discrepancies with the lab team, and use measurements to drive design improvements.
Collaborate with other teams to ensure that PIC design choices support overall system performance, reliability, and manufacturability.
Required Skills
M.S. or Ph.D. in Electrical Engineering, Applied Physics, or Photonics (or equivalent experience).
At least 4 years of relevant experience designing integrated photonics (Si, SiN, InP, or related platforms) with demonstrated tape-out experience.
Advanced proficiency in photonics simulation and modeling (e.g., EME, FDTD, FEM, BPM, eigenmode, circuit-level/Interconnect modeling).
Hands-on experience with photonic layout and verification, including PDK usage and managing mask/tapeout deliverables.
Proficiency with Python for design automation, analysis, and workflow tooling, including comfort with Git version control.
Practical experimental familiarity with common optical test equipment and techniques, such as fiber coupling, insertion loss measurement, and spectrum analysis.
Nice-to-have Skills
Experience with multiple tapeouts at commercial foundries, including direct foundry interface and post-silicon debug.
Experience using common photonics toolchains (Lumerical, Synopsys, COMSOL) and layout stacks (KLayout, gdsfactory).
Experience designing PIC-based laser subsystems, micro-combs, narrow-linewidth sources, or frequency control photonics.
Familiarity with photonic packaging constraints, such as coupling, alignment tolerances, and thermal effects.
Strong communication and presentation skills, especially for working effectively with external partners.
Technology Tags
The core responsibility is designing and delivering next-generation photonic integrated circuits (PICs).
The job requires advanced proficiency in simulation techniques like EME, FDTD, and FEM for rigorous EM/photonic modeling.
The role involves designing and delivering integrated photonics and related optical subsystems for quantum products.
Proficiency with Python and Git is required for design automation, analysis, and workflow tooling.
The required experience involves designing integrated photonics using semiconductor/dielectric platforms such as Si, SiN, or InP.
The integrated photonics developed serve as the engine for performance, scale, and reliability in next-generation quantum products.
The role involves defining test plans, reviewing data, troubleshooting discrepancies, and translating measurements into actionable design improvements.