{"schemaVersion":"jobsearcher.job.v1","id":"eeec35ef8bfeac0c944fcca5","url":"https://jobsearcher.com/jobs/eeec35ef8bfeac0c944fcca5","canonicalUrl":"https://jobsearcher.com/jobs/eeec35ef8bfeac0c944fcca5","title":"Quantum Physicist (Quantum Computing)","description":"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 ResponsibilitiesDesign, build, calibrate and maintain Quantum Computers based on neutral atomsParticipate and/or lead Research and Development projects for laser systems, Quantum Processing Units, quantum gate protocols, etc. for Quantum ComputersCreate, test, and validate mathematical models of atomic physics behavior, and use the results to inform system design by translating high-level system requirements into specialized engineering subsystemsSelf-start and successfully execute on a new R&D activity given a well-defined goal and constraints (e.g. resources, timeframe): gather requirements from stakeholders, drive definition of solution space, drive project executionDevelop, test, run, and debug software for conducting experiments and system tuning in productionDesign, assemble, and test laser and optical systemsOwnership of subsystems to maintain high availability and high performanceMentor and teach junior team members as indirect reports. Supervise internsRequirementsPhD in atomic physics, optical physics, or related field; or equivalent related professional experience (4+ years); If you have substantially more experience than this and are excited to apply, please do! We will also consider hiring at the Senior Quantum Physicist levelProficiency in using tools commonly found in an atomic physics lab, such as lasers, acousto-optic modules, RF signal generators and analyzers, and ultra-high-vacuum systemsProficiency in writing Python code for running physics experimentsProficiency in calculating atom-light interaction for input laser specificationsExcellent verbal and written communication skills, ability to effectively share information with technical and non-technical staff at all levels of company hierarchyExcellent collaboration skills, ability to work in an agile efficient team environment where engagement, feedback, and participation are an expected part of successful job performanceDemonstrated problem solving skills and fast learning rateAbility to work both autonomously—taking high-level goals as input to develop and execute an optimal plan while gathering necessary resources—and collaboratively, by soliciting and incorporating input from colleagues. It is a plus if you have:Experience in operating high power CW laser (> 1 Watt) and/or short-wavelength visible laser (< 500 nm) and designing their laser power delivery systemsExperience with characterization and mitigation of laser frequency and intensity noiseExperience with analog electronics and use of servo loops for laser and subsystem stabilizationExperience with image projection through a high numerical aperture (NA) imaging systemExperience in integrating heterogeneous subsystems for a complex physics experimentFamiliarity with Git, Linux, and command line interface (CLI) toolsEnthusiasm for staying up-to-date with latest developments in AMO physics and reviewing relevant papers for the teamNoteThis 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 REQUIREMENTSWork 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.TRAVELUp 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.BenefitsThe targeted salary range for this role is $130,000 to $211,000 on an annualized basis plus eligibility to participate in our annual incentive plan.In addition to your base compensation, we offer a generous Total Rewards program which includes:100% company paid Employee coverage for Medical, Dental, Vision, and Short/Long Term Disability insurance programsEmployer funded Health Savings AccountUnlimited Paid Time Off401(k) Matching ProgramsCompany paid Life and AD&D InsuranceFlexible Healthcare Savings AccountPaid FMLA LeavePaid Maternity/Paternity LeaveEmployer Assistance ProgramStudent Loan RepaymentEqual OpportunityHere you have freedom to embrace your whole self: who you love, your gender identity and expression, skin color, age, appearance, disability, neurodiversity, DNA, military/veteran status, citizenship, and other factors that make up who you are. Your uniqueness is valued, welcomed, and appreciated here. We are dedicated to providing a positive workplace and base all employment decisions on your qualifications, performance, merits, as well as business needs. We are proud to be an Equal Employment Opportunity Employer.Contact InformationIf this opportunity interests you and you fit the job description, please submit an application. If you need assistance or an accommodation due to disability, please feel free to contact us at hr@infleqtion.comNotice to Recruitment Agencies:Infleqtion does not accept unsolicited resumes from agencies. Infleqtion is not responsible for any fees related to unsolicited resumes.","company":"Infleqtion","rawCompany":"infleqtion","city":"Boulder","state":"CO","isRemote":false,"isActive":false,"createdAt":"2026-08-01T08:50:19.774Z","occupations":[{"code":"19-2012.00","title":"Physicists","slug":"physicists"},{"code":"25-1054.00","title":"Physics Teachers, Postsecondary","slug":"physics-teachers-postsecondary"},{"code":"19-2099.00","title":"Physical Scientists, All Other","slug":"physical-scientists-all-other"}],"industries":[{"code":"541715","title":"Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)","slug":"research-and-development-in-the-physical-engineering-and-life-sciences-except-nanotechnology-and-biotechnology"},{"code":"541713","title":"Research and Development in Nanotechnology","slug":"research-and-development-in-nanotechnology"},{"code":"334413","title":"Semiconductor and Related Device Manufacturing","slug":"semiconductor-and-related-device-manufacturing"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Quantum Physicist (Quantum Computing)","description":"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 ResponsibilitiesDesign, build, calibrate and maintain Quantum Computers based on neutral atomsParticipate and/or lead Research and Development projects for laser systems, Quantum Processing Units, quantum gate protocols, etc. for Quantum ComputersCreate, test, and validate mathematical models of atomic physics behavior, and use the results to inform system design by translating high-level system requirements into specialized engineering subsystemsSelf-start and successfully execute on a new R&D activity given a well-defined goal and constraints (e.g. resources, timeframe): gather requirements from stakeholders, drive definition of solution space, drive project executionDevelop, test, run, and debug software for conducting experiments and system tuning in productionDesign, assemble, and test laser and optical systemsOwnership of subsystems to maintain high availability and high performanceMentor and teach junior team members as indirect reports. Supervise internsRequirementsPhD in atomic physics, optical physics, or related field; or equivalent related professional experience (4+ years); If you have substantially more experience than this and are excited to apply, please do! We will also consider hiring at the Senior Quantum Physicist levelProficiency in using tools commonly found in an atomic physics lab, such as lasers, acousto-optic modules, RF signal generators and analyzers, and ultra-high-vacuum systemsProficiency in writing Python code for running physics experimentsProficiency in calculating atom-light interaction for input laser specificationsExcellent verbal and written communication skills, ability to effectively share information with technical and non-technical staff at all levels of company hierarchyExcellent collaboration skills, ability to work in an agile efficient team environment where engagement, feedback, and participation are an expected part of successful job performanceDemonstrated problem solving skills and fast learning rateAbility to work both autonomously—taking high-level goals as input to develop and execute an optimal plan while gathering necessary resources—and collaboratively, by soliciting and incorporating input from colleagues. It is a plus if you have:Experience in operating high power CW laser (> 1 Watt) and/or short-wavelength visible laser (< 500 nm) and designing their laser power delivery systemsExperience with characterization and mitigation of laser frequency and intensity noiseExperience with analog electronics and use of servo loops for laser and subsystem stabilizationExperience with image projection through a high numerical aperture (NA) imaging systemExperience in integrating heterogeneous subsystems for a complex physics experimentFamiliarity with Git, Linux, and command line interface (CLI) toolsEnthusiasm for staying up-to-date with latest developments in AMO physics and reviewing relevant papers for the teamNoteThis 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 REQUIREMENTSWork 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.TRAVELUp 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.BenefitsThe targeted salary range for this role is $130,000 to $211,000 on an annualized basis plus eligibility to participate in our annual incentive plan.In addition to your base compensation, we offer a generous Total Rewards program which includes:100% company paid Employee coverage for Medical, Dental, Vision, and Short/Long Term Disability insurance programsEmployer funded Health Savings AccountUnlimited Paid Time Off401(k) Matching ProgramsCompany paid Life and AD&D InsuranceFlexible Healthcare Savings AccountPaid FMLA LeavePaid Maternity/Paternity LeaveEmployer Assistance ProgramStudent Loan RepaymentEqual OpportunityHere you have freedom to embrace your whole self: who you love, your gender identity and expression, skin color, age, appearance, disability, neurodiversity, DNA, military/veteran status, citizenship, and other factors that make up who you are. Your uniqueness is valued, welcomed, and appreciated here. We are dedicated to providing a positive workplace and base all employment decisions on your qualifications, performance, merits, as well as business needs. We are proud to be an Equal Employment Opportunity Employer.Contact InformationIf this opportunity interests you and you fit the job description, please submit an application. If you need assistance or an accommodation due to disability, please feel free to contact us at hr@infleqtion.comNotice to Recruitment Agencies:Infleqtion does not accept unsolicited resumes from agencies. Infleqtion is not responsible for any fees related to unsolicited resumes.","datePosted":"2026-08-01T08:50:19.774Z","dateModified":"2026-08-01T08:50:19.774Z","hiringOrganization":{"@type":"Organization","name":"Infleqtion","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Boulder","addressRegion":"CO","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"eeec35ef8bfeac0c944fcca5"},"url":"https://jobsearcher.com/jobs/eeec35ef8bfeac0c944fcca5"}}