We are looking to recruit a

Postdoc in the domain of coherent spin shuttling for scaling semiconductor qubits


The JARA-Institute for Quantum Information (JARA-QI), headed by David DiVincenzo and Hendrik Bluhm conducts theoretical research on many aspects of quantum computing and experimental research on semiconductor qubits. The institute has two parts, located at the sites Forschungszentrum Jülich GmbH and RWTH Aachen University, under the umbrella of the Jülich-Aachen Research Alliance (JARA). In the domain of semiconductor qubits, the development and validation of an advanced architecture based on coherent long range qubit shuttling is currently one of our main activities. To this end, we pursue a holistic approach addressing material challenges, device simulation, fabrication, systematic characterization, high fidelity operation as well as integration and scaling technologies. Our ultimate vision is a fully integrated semiconductor processor with integrated low-power control circuits to enable a scale up to millions of qubits. https://www.youtube.com/watch?v=0tWaplC4FVs

Institute issuing the offer
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Your Job:

Building on in-house fabricated devices, we have recently demonstrated the ability to shuttle electrons between gate defined quantum dots in Si/SiGe over micron-scale distances using only four different AC-voltages, independent of the distance covered https://arxiv.org/abs/2108.00879 . Theoretical consideration indicate good prospects for maintaining spin-coherence of the shuttled electron, which would make this approach very promising for scaling up semiconductor spin qubit devices. This position focuses on experimentally demonstrating coherent spin shuttling, shuttling-compatible high-fidelity qubit control and further ingredients for a shuttling-based architecture, using devices from academic or industrial fabrication.
Key activities can include:

  • Demonstration and experimental characterization of spin coherence during shuttling
  • Shuttling-compatible demonstration of high-fidelity qubit control
  • Demonstration of T-Junctions (Fig. 1(b)) as step towards qubit grids
  • Advancement of a shuttling based architecture with 2D-connectivity
  • Migration to industrially fabricated devices

Your Profile:

  • Master’s degree and PhD in physics or a similar discipline
  • In-depth experience with quantum control experiments on quantum dot qubits
  • Good software development skills
  • Experience with sub-Kelvin cryogenic techniques
  • Strong aptitude for mentoring students
  • Good communication skills
  • A strong drive to conduct ambitious, cutting edge research towards scalable quantum computing
  • A research track record commensurate with our ambition

Our Offer:

Besides the involvement in a very exciting research field, we offer:

  • Involvement in a unique holistic approach spanning from exploring new ideas to their technological implementation
  • A strong network, in particular with respect to semiconductor technology
  • Innovative infrastructure
  • Very good team atmosphere
  • A balanced working environment
  • A broader research environment with a strong quantum computing focus
  • A competitive salary and benefits package
  • Full-time position with the option of slightly reduced working hours and 30 days of annual leave
  • Targeted services for international employees, e.g. through our International Advisory Service
  • Fun events, see https://www.quantuminfo.physik.rwth-aachen.de/go/id/zeyz/Fun-stuff/?lidx=1

While this announcement mostly targets a regular postdoc position, candidates with the appropriate track record will be considered for a permanent position as a research scientist now or at a later stage.

We offer you an exciting and varied role in an international and interdisciplinary working environment. The position is initially for a fixed term of 2 years, with possible long-term prospects. Salary and social benefits in conformity with the provisions of the Collective Agreement for the Civil Service (TVöD).

We welcome applications from people with diverse backgrounds, e.g. in terms of age, gender, disability, sexual orientation / identity, and social, ethnic and religious origin. A diverse and inclusive working environment with equal opportunities in which everyone can realize their potential is important to us.

We look forward to receiving your application. The job will be advertised until the position has been successfully filled. You should therefore submit your application as soon as possible.

Apply now

Questions about the offer?

Please feel free to contact us via our contact form.
Please note that for technical reasons we cannot accept applications by e-mail.

You can find helpful information on the application and selection process here. You can also find answers to frequently asked questions in our FAQs.

Last Modified: 19.02.2024