Senior Quantum Engineer, Photonics

Entangled Future; Espoo; Hybrid; EUR 95,000 - 125,000; Full time

Job summary

IQM Quantum Computers in Espoo, Finland, seeks a Senior Quantum Engineer (Photonics) to advance optical interconnects for superconducting qubits. You will design and run experiments in a dilution refrigerator, characterize cryogenic components, and help shape the control stack with input from partners and leadership.

You will work closely with team leads on technical decisions, grant activities, and research collaborations to scale quantum hardware using photonics.

Qualifications

• PhD in a relevant field required.
• At least five years of relevant academic or industrial experience in electronics, photonics or quantum computing.
• Experience running quantum-related experiments in a dilution refrigerator.
• Independent setup, troubleshooting, running and documenting experiments in cryogenic environments.
• Experience with RF and microwave measurement equipment such as network analyzers and pulse generators.
• Python skills for measurement automation and data analysis.
• Good written and spoken English; ability to coordinate across stakeholders.

Responsibilities

• Build and develop an experimental platform for superconducting quantum computing with optical links.
• Design and run experiments in a dilution refrigerator, including optical signal paths and sample mounting.
• Characterize optical and cryogenic electronic components (cryogenic photodiodes, lasers, modulators).
• Develop experiments to demonstrate single and two-qubit gates and readout using optical interconnects.
• Simulate and analyze gate fidelities, noise, drift and dissipation to identify improvements.
• Evaluate technology options for the quantum computer control stack and signal path.
• Document results and communicate findings to colleagues and partners.
• Contribute to grant projects with reporting and coordination.

Education

PhD in applied physics, electrical engineering or related field

Tools

RF and microwave measurement equipment

Python for scientific programming

Job description

Senior Quantum Engineer, Photonics at IQM Quantum Computers, Espoo, FI. A senior-level full time position in the Engineering team, listed under hardware engineering.

You will help develop optical communication links between room temperature electronics and cryogenic quantum hardware, exploring how photonics can support the scaling of superconducting quantum computers. Your main focus will be building and running an experimental platform in a dilution refrigerator. You will characterisze devices, investigate noise and evaluate how optical interconnects affect qubit control, readout and gate fidelity. Working closely with the Team Lead and research partners, you will contribute to technical decisions about our future control stack.

What you’ll actually do

• Build and develop an experimental platform for superconducting quantum computing with optical communication links.
• Design and run experiments in a dilution refrigerator, including optical signal paths, swapping and mounting samples, optimizing RF and microwave environment with heat conductivity and dissipation budget in mind, and automate measurements.
• Characterize optical and cryogenic electronic components, including cryogenic photodiodes, lasers and modulators.
• Develop experiments to demonstrate and characterize single and two qubit gates and qubit readout using optical interconnects.
• Simulate and analyze gate fidelities, noise, drift, and dissipation to identify limitations and explore ways to improve performance.
• Evaluate technology options and scalability requirements for the quantum computer control stack and signal path.
• Document results and communicate findings to colleagues, technical decision makers, and external research partners.
• Own technical contributions to grant projects, including reporting, proposals and coordination with partner companies and institutes.

Seen as an advantage

• Experience with superconducting qubits, circuit quantum electrodynamics, qubit control or readout.
• Experience with photonics, optical interconnects or microwave photonics.

Requirements

• A PhD in applied physics, electrical engineering or a related field.
• At least five years of relevant academic or industrial experience in electronics, photonics or quantum computing.
• Practical experience running quantum related or active electronics experiments in a dilution refrigerator.
• The ability to independently set up, troubleshoot, run and document experiments, including operating a dilution refrigerator and installing samples.
• Experience with RF and microwave measurement equipment, such as network analyzers and pulse generators.
• Python skills for scientific programming, measurement automation and data analysis.
• Understanding of analogue and digital electronics, including noise, drift, signal to noise ratio and bandwidth.
• Clear written and spoken English, with the ability to explain technical findings and coordinate work across internal and external stakeholders