Description

Infleqtion is seeking an Applied Physicist to develop, operate, and enhance experimental platforms for Rydberg-atom radio-frequency sensing. This role focuses on independent ownership of experiments and testbeds, translating atomic, optical, and RF behaviors into sensor improvements, and integrating those into comprehensive QRF systems. The position emphasizes hands-on laboratory work, with modeling supporting experiment design and interpretation.

Required Skills

Experimental Platforms
Atomic, Optical, and RF Behavior
Laboratory Work
Modeling Supports Experiment Design and Interpretation

Additional Information

Minimum Education: Bachelor's degree in physics, applied physics, optical engineering, electrical engineering, or a closely related field.
Required Previous Experiences: four years of relevant hands-on experimental experience
hands-on experience building, aligning, operating, and troubleshooting complex experimental apparatus integrating lasers/optics, electronics, RF/microwave hardware, thermal/mechanical hardware, and software/controls.
practical experience with laser and optical alignment, photodetection, electronic instrumentation, and diagnosis of noise, stability, or performance limitations.
working knowledge of RF measurements and experience using equipment like signal generators, spectrum analyzers, oscilloscopes, or vector network analyzers.
ability to design controlled experiments, analyze noisy data, assess measurement uncertainty and repeatability, and draw defensible conclusions from incomplete or conflicting results.
experience automating experiments and analyzing data using Python or a comparable scientific programming environment.
Preferred Qualifications: Hands-on experience with Rydberg atoms, electromagnetically induced transparency, Autler–Townes spectroscopy, atomic RF electrometry, or closely related vapor-cell sensing.
Experience with rubidium or cesium vapor cells, multi-laser spectroscopy, acousto-optic or electro-optic modulators, optical-frequency locking, optical-power stabilization, or low-noise photodetection.
Experience characterizing RF resonators, calibrated RF-field delivery, antennas, electrodes, TEM or GTEM cells, or microwave measurement systems.
Experience integrating precision laboratory instruments into stable, repeatable, transportable, or field-capable systems.
Familiarity with requirements-based verification, configuration-controlled hardware, and test evidence for aerospace, defense, scientific-instrumentation, or U.S. government programs; a current or previously held U.S. government security clearance is preferred but not required.
Experience using Ansys HFSS, COMSOL, Zemax, Rydiqule, or related modeling tools to design or interpret experiments.

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Applied Physicist at coldquanta

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