The Trapped Ion Quantum Technology group at Stockholm University invites applications for two postdoctoral positions on our trapped Rydberg ion experiments. The first position is to work on our existing room-temperature experimental setup to perform fast, parallel quantum gates in longer ion strings. The second position is to set up a novel cryogenic Rydberg ion experiment.

Trapped Rydberg ions are a new system for quantum computation. By laser pulses the ions’ outermost electron is excited to a high-lying Rydberg orbital [1]. Such Rydberg ions are million times bigger than ions in the ground state, and due to their size obtain very peculiar properties. Trapped ions can be entangled via a strong Rydberg interaction within nanoseconds [2]. This method supports fast entangling gates in large ions crystals, thus enabling a fast trapped Rydberg ion quantum computer or quantum simulator.

For more information please visit our group website and/or contact Assoc. Prof. Markus Hennrich, markus.hennrich@fysik.su.se.

Literature:
[1] Higgins, et al., Coherent control of a single trapped Rydberg ion, Physical Review Letters 119 (22), 220501 (2017).
[2] Zhang, et al., Submicrosecond entangling gate between trapped ions via Rydberg interaction, Nature 580, 345 (2020).