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Salary: USD 135,000 - 170,000 / annual
Infleqtion is commercializing atom-based quantum technologies for sensing and computing applications. We are seeking an experienced Quantum Physicist to design, build, calibrate, and operate neutral-atom quantum computing systems.
You will lead R&D projects involving quantum processor hardware, quantum-gate protocols, laser and optical systems, calibration, control, and system integration. Your responsibilities include translating technical goals into experimental plans and measurable performance targets, designing and analyzing experiments with physics-based models, and independently executing well-defined technical work from planning through implementation and validation.
You will develop Python-based tools for experiment control, data analysis, calibration, automation, and hardware integration. You will own assigned subsystems through testing, troubleshooting, maintenance, documentation, and routine operation. Collaboration with physics, software, electrical, mechanical, and systems-engineering teams is essential. You will provide technical guidance to junior team members and supervise interns as appropriate.
The role is based in Louisville, Colorado, with up to 10% travel required. Work is performed in office and laboratory environments around technical equipment including computers and lasers. Personal Protective Equipment will be provided as needed.
Note: This position may require access to information protected under U.S. export control laws and regulations for quantum computing technology. Any offer may be conditioned on authorization to receive software or technology controlled under these regulations without sponsorship for an export license.
**Requirements:**
- PhD in atomic, optical, AMO, quantum physics, or related field, OR at least four years of comparable research or professional experience
- Hands-on experience conducting experiments involving atomic, optical, quantum, or precision-measurement systems
- Experience applying quantitative atomic or optical physics models to experimental design or specification of laser, optical, RF, or control systems
- Hands-on experience with lasers and optical systems, including 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 designing and analyzing physics experiments or developing an experimental subsystem
**Preferred Qualifications:**
- Experience with neutral atoms, trapped ions, Rydberg physics, optical tweezers, quantum-gate protocols, or other coherent-control platforms
- Experience with high-power or short-wavelength lasers and optical power-delivery systems
- Experience characterizing or mitigating laser-frequency, phase, pointing, or intensity noise
- Experience with analog electronics, RF systems, or feedback control
- Experience with high-numerical-aperture imaging, beam shaping, or optical projection
- Experience integrating optical, electronic, vacuum, control, and software subsystems
- Familiarity with Linux, Git, command-line tools, and collaborative software-development practices
