Postdoctoral Fellow (PREP0004018)

Johns Hopkins University; Baltimore (MD); On-site; USD 70,000 - 90,000; Full time

Job summary

Johns Hopkins University is seeking a PREP Research Associate focused on quantum magnetometry to advance the Nanoscale Spectroscopy Group’s projects. This role entails developing and utilizing optical detectors and designing instrumentation to study color center spins in diamond.

Applicants should possess a Ph.D. and relevant experience in fields such as magnetic resonance, microscopy, and Bayesian programming. A commitment to equal opportunity is integral to our university’s mission.

Qualifications

• Ph.D. in relevant field.
• At least 2 years of relevant experience.
• Experience in magnetic resonance of NV centers.

Responsibilities

• Design instrumentation for magnetic resonance sensing.
• Develop confocal and bulk sensor instrumentation.
• Present results at meetings.

Skills

Experience in magnetic resonance/ODMR/EDMR of color center spins

Experience with confocal microscopy

Strong written and oral communication skills

Team-oriented and goal-driven

Familiarity with Bayesian experimental design

Education

Ph.D. in Physics, Electrical Engineering, Applied Physics, or related field

Tools

Confocal microscopy

Lasers and optical alignment

Microwave electronics

Single photon counting

Job description

PREP Research Associate

This position is part of the National Institute of Standards (NIST) Professional Research Experience (PREP) program. NIST recognizes that its research staff may wish to collaborate with researchers at academic institutions on specific projects of mutual interest, thus requires that such institutions must be the recipient of a PREP award. The PREP program requires staff from a wide range of backgrounds to work on scientific research in many areas. Employees in this position will perform technical work that underpins the scientific research of the collaboration.

Research Title: Research Physicist - Quantum magnetometry using photoelectrically detected magnetic resonance of NV centers in diamond

U.S. Citizen Preferred

Scope of Work

Quantum sensing based on optically active spin defects in semiconductors (color center spins) is an emerging opportunity to deploy SI-traceable measurements in widespread application areas, including transportation, medicine, and resource exploration. The Nanoscale Spectroscopy Group seeks a research physicist to conduct optically and photoelectrically detected spin resonance sensing of magnetic fields for such applications. The successful candidate will study the physics and control of color center spins using a combination of metrologies, including optical and magnetic spectroscopies, advanced microscopies, and simulations to develop quantum sensing platforms. With limited supervision, the candidate will develop high-resolution spectral characterization of NV centers in diamond and other color center spins; investigate promising new color center spins in systems such as GaN, Si, and SiC; use judgment and literature precedents to research, interpret, and apply available guiding principles to characterize nanoscale optical and spin measurements of color centers, including single-defect emission, time‑resolved detection, stroboscopic and spectroscopic methods, and nanoscale magnetometry using diverse readout schemes. The candidate will also integrate Bayesian algorithms for efficient measurements and develop automated measurement systems. The candidate will undertake numerical modelling of spin dynamics to understand device performance and improve on sensor design. The work impacts the goals of the nanoscale spectroscopy program to advance the development of engineered artificial atoms for nanoscale sensing and quantum applications. The candidate will interact with a broader team consisting of spectroscopy and materials chemistry expertise. The candidate will disseminate research results through open literature publication and technical talks at conferences.

Key Responsibilities

• Designing, integrating, testing, and operating instrumentation for performing optically detected and photoelectrically detected magnetic resonance sensing of diamond NV centers.
• Develop scanning confocal microscopy, widefield microscopy, and bulk sensor instrumentation incorporating optical excitation and readout, electrical biasing, and microwave spin control.
• Developing new and employing existing Bayesian algorithms for measurement efficiency and automation.
• Numerical modelling of spin resonance dynamics for sensor development.
• Presenting results at internal meetings, and occasional meetings with external stakeholders.
• Ensuring that results, protocols, software, and documentation have been archived or otherwise transmitted to the larger organization.

Qualifications

• Ph.D. in Physics, Electrical Engineering, Applied Physics, or a closely related field.
• At least 2 years of relevant experience.
• Experience in magnetic resonance/ODMR/EDMR of color center spins, including NV centers in diamond.
• Experience with confocal microscopy, lasers, optical alignment, single photon counting, microwave electronics, and experimental design.
• Familiarity with Bayesian experimental design and programming instrumental control.
• Team-oriented and goal-driven, with strong written and oral communication skills.
• Demonstrated ability to write and present research clearly and effectively.

Equal Opportunity Employer

The Johns Hopkins University is committed to equal opportunity for its faculty, staff, and students. To that end, the university does not discriminate on the basis of sex, gender, marital status, pregnancy, race, color, ethnicity, national origin, age, disability, religion, sexual orientation, gender identity or expression, veteran status or other legally protected characteristics. The university is committed to providing qualified individuals access to all academic and employment programs, benefits and activities on the basis of demonstrated ability, performance and merit without regard to personal factors or demographic characteristics that are irrelevant to the program involved.