Senior Quantum Sensor Physicist - Inertial & Gravitational

Infleqtion; Madison (WI); On-site; USD 166,000 - 256,000; Full time

Benefits offered by this job

100% company paid Medical, Dental, and

Health Savings Account

Unlimited Paid Time Off

401(k) Matching

Life and AD&D Insurance

Flexible Healthcare Savings Account

Paid FMLA Leave

Paid Maternity/Paternity Leave

Employer Assistance Program

Student Loan Repayment

Job summary

Infleqtion in Madison, WI is seeking a Staff Quantum Sensor Physicist to translate customer needs into practical architectures for deployable atom-based inertial sensors and gravimeters. You will lead cross-disciplinary efforts across physics, optics, mechanics, and electronics to deliver field-ready quantum sensing devices.

The role requires a PhD in a relevant field, hands-on experience with atom interferometry or AMO hardware, and strong communication with customers.

Qualifications

• PhD in atomic physics, optical physics, quantum sensing, precision measurement, or related field.
• Experience with atom-based inertial and/or gravitational sensors and related hardware.
• Ability to balance physics performance with reliability and cost constraints.
• Experience designing, building, integrating, testing, and debugging complex systems.
• Experience developing models, simulations, calculations, and/or error budgets.
• Ability to work with engineering teams across optics, mechanics, electrical, software, and controls.
• Strong communication to technical and non-technical staff and customers.
• Up to 10% travel domestically; US work authorization without sponsorship.

Responsibilities

• Participates in and/or leads research and development projects involving atom interferometry, atom-based inertial and gravitational sensing, cold-atom systems, laser systems, vacuum systems, controls, and quantum sensing systems
• Translates customer needs, use cases, and specifications into practical quantum sensor architectures, requirements, error budgets, trade studies, operating concepts, and development plans
• Leads or supports development from concept and architecture phases through test, operation, and deployment
• Develops and maintains physics models, simulations, calculations, and error budgets to guide architecture decisions and performance estimates
• Evaluates sensor concepts against real-world constraints including sensitivity, bandwidth, SWaP-C, manufacturability, reliability, cost, and risk
• Works with engineering teams to convert physics concepts into buildable instrument designs
• Participates in proposal development and customer technical discussions
• Communicates project findings and progress to internal stakeholders and external customers

Skills

Communication skills

Team collaboration

System-level thinking

Hardware debugging

Software modeling

Education

PhD in atomic/optical physics

Tools

Atom interferometry hardware

AMO hardware

Job description

Infleqtion in Madison, WI is seeking a Staff Quantum Sensor Physicist to translate customer needs into practical architectures for deployable atom-based inertial sensors and gravimeters. You will lead cross-disciplinary efforts across physics, optics, mechanics, and electronics to deliver field-ready quantum sensing devices.

The role requires a PhD in a relevant field, hands-on experience with atom interferometry or AMO hardware, and strong communication with customers.