Applied Physicist, Quantum RF Sensing (Rydberg)

Infleqtion; Louisville (CO); On-site; USD 145,000 - 170,000; Full time

Benefits offered by this job

Medical benefits

Unlimited PTO

401(k) match

Health Savings Account

Job summary

Infleqtion seeks an Applied Physicist to build, operate, and improve experimental platforms for Rydberg-atom RF sensing. You will own defined experiments, translate atomic/optical/RF behavior into measurable sensor improvements, and push validated changes into integrated QRF systems.

The role centers on hands-on lab work with modeling to support design decisions. You will work with RF, optical-mechanical, electrical, embedded-software, and systems teams to maintain stable configurations,

Qualifications

• Bachelor’s degree in physics, applied physics, optical engineering, electrical engineering, or a closely related field.
• Hands-on experience building, aligning, operating, and troubleshooting complex experimental apparatus.
• Practical experience with laser and optical alignment, photodetection, and noise/uncertainty analysis.
• Experience automating experiments and data analysis with Python or similar tools.
• Ability to design controlled experiments and translate results into hardware or software improvements.
• Ability to collaborate across physics, engineering, and product teams.

Responsibilities

• Own defined experimental campaigns addressing QRF sensitivity, noise, and stability.
• Build and operate testbeds combining lasers, optics, RF hardware, and data acquisition.
• Design controlled experiments to identify performance limitations and drive improvements.
• Integrate validated improvements into sensor heads and complete QRF systems.
• Characterize vapor cells and RF resonators, including noise and repeatability.
• Develop automated instrument-control and data-analysis workflows in Python.
• Translate findings into test procedures and engineering recommendations.

Skills

Experimental campaigns

Laser alignment

RF measurements

Python automation

Data analysis

Interdisciplinary collaboration

On-site lab work

Education

Bachelor’s degree in physics / optical / electrical engineering

Tools

Ansys HFSS

COMSOL

Zemax

Rydiqule

Job description

Infleqtion seeks an Applied Physicist to build, operate, and improve experimental platforms for Rydberg-atom RF sensing. You will own defined experiments, translate atomic/optical/RF behavior into measurable sensor improvements, and push validated changes into integrated QRF systems.

The role centers on hands-on lab work with modeling to support design decisions. You will work with RF, optical-mechanical, electrical, embedded-software, and systems teams to maintain stable configurations,