Project description

The Trapped Ion Quantum Technology group at Stockholm University is inviting applications for a postdoctoral position in our Trapped Rydberg Ion Project. The candidate will contribute to cutting-edge research on trapped ion experiments, focusing on the implementation of fast quantum gates and quantum algorithms using Rydberg interactions.

Trapped Rydberg ions represent a novel platform for quantum computation. By applying laser pulses, the outermost electron of an ion is excited to a high-lying Rydberg orbital [1], resulting in ions that are millions of times larger than their ground-state counterparts. This dramatic increase in size grants Rydberg ions unique and highly favorable properties for quantum operations. Specifically, trapped ions can achieve entanglement via strong Rydberg interactions in under a microsecond [2], facilitating fast entangling gates in large ion crystals. These capabilities pave the way for the realization of high-speed trapped ion quantum computers and quantum simulators.

The experimental postdoctoral project will be conducted in the Trapped Ion Quantum Technology group at Stockholm University and is funded by the Wallenberg Centre for Quantum Technology - WACQT. WACQT is committed to promoting career development, diversity and gender equality through networking and supporting activities.

For more information see http://qtech.fysik.su.se/.

References

[1] G. Higgins, et al., Coherent control of a single trapped Rydberg ion, Physical Review Letters 119 (22), 220501 (2017).

[2] C. Zhang, et al., Submicrosecond entangling gate between trapped ions via Rydberg interaction, Nature 580, 345 (2020).

Main responsibilities

The position involves experimental research with trapped ions, laser excitation into Rydberg states, characterization of quantum states and processes, numerical simulations of the experimental results, co-supervision of students.

Ref. No. SU FV-3402-25

Closing date: 20 October 2025

Complete information here