[Fully funded PhD studentship.]

This fully funded PhD studentship at the University of Birmingham offers an exciting opportunity to contribute to the redefinition of the SI second using optical clocks. Optical clocks represent the most precise instruments ever developed, enabling advances in fundamental physics and precision measurement. Currently, the SI second is defined by the Cs hyperfine transition in the microwave domain (~9.2GHz), but optical clocks have surpassed microwave clocks in performance by at least two orders of magnitude. The project aims to drive the transition to an optical clock-based definition of the SI second, a major milestone in metrology and timekeeping.

The research involves comparing ensembles of optical clocks, forming networks across the UK and Europe, and developing transportable optical clocks within the laboratory. Transportable optical clocks are expected to play a crucial role in the redefinition process, enabling comparisons and collaborations across institutions. The successful candidate will join a dynamic team of postdoctoral researchers and PhD students, working at the forefront of precision measurement and quantum optics.

Applicants should have a strong background in physics or a closely related discipline, with a good undergraduate degree (first or upper second class). Experience or interest in atomic physics, quantum optics, instrumentation, or precision measurement is highly desirable. The position is fully funded, covering tuition and stipend, and offers access to state-of-the-art facilities and collaborative networks.

The application deadline is 16 April 2026. Interested candidates should apply online via the University of Birmingham application portal and may contact Professor Yeshpal Singh ([email protected]) for further information. This studentship is ideal for those passionate about advancing the science of timekeeping and contributing to a fundamental change in international standards.