Senior Quantum Physicist (Quantum Computing)

Infleqtion is on a mission to commercialize atom-based quantum technologies that deliver orders-of-magnitude improvements in sensing and computing applications. As a deep-tech startup we embrace a results-driven fast-paced and customer-focused approach to innovation. We are seeking self-motivated energetic individuals with exceptional problem-solving and technical skills to help drive our Quantum Computing mission forward. We encourage applications from experimental physicists with expertise in Atomic Molecular and Optical (AMO) physics particularly those with experience in the coherent control of quantum systems such as ultracold atoms trapped ions and diamond NV centers.

Role and Responsibilities

• Design integrate calibrate operate and improve neutral-atom quantum computing systems and critical subsystems.

• Lead R&D projects involving quantum processor hardware quantum-gate protocols laser and optical systems calibration control or system integration.

• Translate program goals into technical requirements experimental plans and measurable performance targets.

• Design and analyze experiments and physics-based models to identify performance limitations and guide technical decisions.

• Independently own critical systems through development validation troubleshooting reliability improvement and routine operation.

• Develop Python-based tools for experiment control data analysis calibration automation and hardware integration.

• Collaborate across physics software electrical mechanical and systems-engineering teams.

• Mentor junior team members and interns and contribute to technical reviews and team best practices.

• PhD in atomic optical AMO quantum physics or a related field plus at least two years of relevant post-PhD experience or comparable professional experience developing complex experimental systems.

• Hands-on experience designing building and operating complex AMO quantum-control or precision-measurement experiments.

• Experience applying quantitative atomic or optical physics models to experimental design or to the specification of laser optical RF or control systems.

• Hands-on experience with lasers and optical systems together with related technologies such as acousto-optic or electro-optic modulators RF instrumentation imaging systems or ultra-high-vacuum equipment.

• Experience using Python for experiment control data analysis automation or hardware integration.

• Evidence of independently leading a substantial experimental project or owning a critical technical subsystem.

It is a plus if you have:

• Experience with neutral-atom quantum computing Rydberg physics optical-tweezer arrays or quantum-gate characterization.

• Experience with advanced laser systems optical beam delivery high-NA imaging beam shaping or optical projection.

• Experience characterizing and mitigating laser-frequency phase pointing or intensity noise.

• Experience with analog electronics RF systems or feedback control.

• Experience integrating optical electronic vacuum control and software subsystems.

• Experience developing automated calibration health-monitoring or experimental test infrastructure.

• Familiarity with Linux Git command-line tools and collaborative software-development practices.

If you do not meet the qualifications for this role consider applying to our intermediate-level position (Quantum Physicist)

Note

This position may require access to information protected under U.S. export control laws and regulations for quantum computing technology. Please note that any offer for employment may be conditioned on authorization to receive software or technology controlled under these U.S. export control laws and regulations without sponsorship for an export license.

WORKING CONDITIONS and PHYSICAL REQUIREMENTS

Work will normally be performed in an office and laboratory environment and around technical equipment including computers and lasers. We ask that candidates be able to efficiently use automated office equipment such as laptops copiers and printers; able to effectively engage in communications (via phone computer or in-person). Any required Personal Protective Equipment will be provided and must be properly used in accordance with company requirements.

TRAVEL

Up to 10% travel may be required.

NOTE: Infleqtion does not accept unsolicited resumes from agencies. Infleqtion is not responsible for any fees related to unsolicited resumes.

• Salary Range: per year 165000 - 200000
• 100% company-paid medical dental vision short/long-term disability
• Employer-funded Health Savings Account
• Unlimited PTO
• 401(k) match
• Company-paid Life and AD&D Insurance
• Flexible Savings Account
• Paid FMLA Maternity/Paternity Leave
• Employee Assistance Program
• Student Loan Repayment
• Equity Program

Notice to Recruitment Agencies:

Infleqtion does not accept unsolicited resumes from agencies. Infleqtion is not responsible for any fees related to unsolicited resumes.

Required Experience:

Senior IC