Infleqtion

Quantum Technology

FrequencyCombPhotonicsEngineer

£75–110k ~AI est. Harwell, England, United Kingdom; Kidlington, Oxfordshire, United Kingdom FULL TIME Remote Friendly
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Mid+ candidates.

The Brief

“Frequency Comb Photonics Engineer at Infleqtion. Skills: Optical frequency combs, Photonics, Laser physics, Optical measurement. Develop optical frequency comb systems. Test optical frequency comb systems”

Industry & Context.

Quantum Technology
Problems you'll solve

Troubleshoot optical test setups

What They're Looking For.

Must Have

PhD in Photonics or Optoelectronics, Experience developing optical frequency combs, Experience with laser physics, Experience with nonlinear optics, Experience with optical resonators, Experience with optical frequency stabilisation, Experience with precision optical measurement techniques, Hands-on experience with optical laboratory equipment, Experience measuring laser or comb performance, Ability to design optical test setups, Ability to align optical test setups, Ability to troubleshoot optical test setups, Ability to optimise optical test setups, Data analysis skills using Python, MATLAB, or LabVIEW, Ability to work in multidisciplinary environment, Good verbal communication skills, Good written communication skills

Nice to Have

Experience with integrated photonics, Experience with silicon photonics, Experience with PIC-based frequency comb technologies, Experience with microresonator frequency combs, Experience with Kerr combs, Experience with electro-optic combs, Experience with mode-locked laser systems, Familiarity with photonics simulation tools, Familiarity with photonics layout tools, Experience with laser stabilisation, Experience with optical phase locking, Experience with frequency transfer, Experience with optical clock systems, Knowledge of quantum systems, Knowledge of atomic physics, Knowledge of atom addressing, Knowledge of quantum sensing, Knowledge of quantum networking, Experience developing automated optical test stations, Experience developing hardware-control software, Familiarity with RF/microwave measurement techniques, Familiarity with high-speed photonic systems, Experience working with foundries, Experience working with photonic packaging partners, Experience working with external device suppliers, Understanding of laser safety, Understanding of HSE practices

What You'll Do.

Develop optical frequency comb systems

Test optical frequency comb systems

Characterise optical frequency comb systems

Support design of photonic components

Support testing of photonic components

Build optical test setups

Operate optical test setups

Characterise frequency combs

Stabilize frequency combs

Validate frequency comb performance

Perform laser characterisation

Measure optical spectra

Measure frequency noise

Measure relative intensity noise

Characterise modulated laser systems

Perform high-speed waveform measurements

Develop automated test methods

Develop data analysis workflows

Integrate frequency comb technologies

Work with external foundries

Work with packaging partners

Document experimental results

Generate technical reports

Support risk assessments

Support safe operating procedures

Support good laboratory practice

How You'll Work.

Team & Collaboration

Photonics teams; Quantum systems teams; Electronics teams; Software teams; Multidisciplinary teams; Matrixed technical environment

Communication Scope

Share technical information

Full Job Description

ABOUT US Infleqtion is a global quantum technology company solving the world’s most challenging problems. The company harnesses quantum mechanics to build and integrate quantum computers, sensors, and networks. From fundamental physics to leading edge commercial products, Infleqtion enables “quantum everywhere” through our ecosystem of devices and platforms. Our mission is to commercialise atom-based quantum products that provide orders of magnitude improvements in performance and computing applications. LOCATION Infleqtion has offices in the USA, United Kingdom, and Australia. This is a full-time position mainly in our Kidlington, Oxford office with the occasional requirement to be in the National Quantum Computing Centre, Harwell. Work from home permitted up to 2 days per week based on business needs and manager approval. POSITION SUMMARY Infleqtion UK is seeking a Frequency Comb Photonics Engineer to support the development, characterisation, and integration of optical frequency comb technologies for quantum systems. This is a hands-on technical role focused on designing, building, testing, and optimising frequency comb systems, including micro-comb and PIC-based approaches. The successful candidate will work closely with photonics, quantum systems, electronics, and software teams to evaluate how compact frequency comb technologies can support applications such as precision timing, sensing, laser stabilisation, atom addressing, and quantum system integration. JOB RESPONSIBILITIES The duties and responsibilities outlined below include essential functions of the role. Depending on business needs, this role may perform a combination of some or all of the following duties. Duties, responsibilities, and activities may change, or new ones may be assigned. * Develop, test, and characterise optical frequency comb systems for quantum technology applications. * Support design and testing of photonic components relevant to comb generation, including resonators, lasers, modu

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