Research Scientist (Theory) QEC Implementations

Who we are

At neQxt, we build full-stack ion-trap quantum computers, striving for excellent performance and scalability. With decades of expertise in ion-trap technology, neQxt was spun out of Mainz University, and it is headquartered in Germany’s Frankfurt Metropolitan area. Our team of leading talent from Europe and beyond covers the entire value chain, from the basic hardware to end-user software level. Join our passionate team of ambitious scientists, engineers, technicians and quantum enthusiasts, building top-tier fault-tolerant quantum computers together!

An inclusive research environment

At neQxt, we believe that excellent science benefits from diverse perspectives and experiences. We welcome applications from researchers of all backgrounds and career stages. We particularly encourage applications from women and other groups underrepresented in quantum science and engineering. We value scientific curiosity, rigorous thinking, collaboration, and the ability to contribute new ideas. We recognize that excellent researchers develop their expertise through different paths, and we encourage candidates to apply even if their experience does not match every listed qualification. If you have questions about the position, the research environment, or the application process, please contact us at

Job description

You will join neQxt’s QEC team in Cologne, Germany. In this role, you are conducting research at the interface of Quantum Error Correction with physical operations and hardware-specific constraints. In close collaboration with other team members, your tasks include mapping state-of-the-art QEC codes and their circuit implementations to 1D and 2D configurations of multiple ion chains. This includes a thorough understanding of circuit-level noise and additional hardware-specific noise processes that arise from atomic physics and our predefined hardware architecture.

Responsibilities

Conduct research on implementing QEC methods within our ion trap architecture
Contribute to the development of models, tools, and numerical methods for the analysis of large-scale mappings of logical qubits to individual ions
Work closely with other researchers to integrate results into broader architectural and simulation frameworks
Produce high-quality research outcomes, including publications, software tools, and technical reports
Track and incorporate relevant advances in fault-tolerant quantum computing into ongoing work

Requirements

Education: A PhD in Physics, Mathematics, Computer Science or similar is required.
Specializations: Expertise in fault-tolerant circuit design and QEC more broadly as well as familiarity with typical limitations of current hardware architectures (not necessarily limited to ion traps)
Experience: At least two years of experience in a relevant research project in an academic or industrial setting

Nice to have

Experience in analytical and numerical methods for analyzing fault-tolerant systems at scale
Previous project experience on the interface of different layers in the QC stack
Theoretical understanding of physical gate mechanisms in ion traps
Strong publication record and demonstrated ability to take technical leadership in research teams

Who you are

You like the idea of working in a fast-paced field, at the forefront of technological development
Interest in working across and integrating results between different layers of the QC stack
You can manage complex and demanding technical challenges independently and are not afraid to ask for help
Curious, persistent and pragmatic, with attention to detail
You are a proactive problem-solver and are comfortable with posing new research questions
You are a clear communicator and a collaborative team player

What we offer

Our QEC team is situated in the midst of a thriving research community comprising excellent academic groups in Aachen, Bonn, Jülich, Düsseldorf, Cologne, as well as industrial players like Microsoft and IBM. Cologne is a one-million-people city that is famous for embracing diversity and for its vibrant international scene, which make it particularly attractive for people who don’t speak German. The QEC team is currently composed of 50% international and 50% female researchers. We value your individuality and offer a flexible environment.

Results-oriented environment with flat hierarchies and a passionate team
Attractive salary with automatic inflation adjustment
Flexible working hours and full overtime compensation
Career development in an emerging tech field
German language courses, if needed/wanted by employee
Company pension scheme
Choice of a flexible mobility budget or company car
Default (mandatory) German employment benefits (e.g. health / pension / unemployment insurance, paid sick leave, maternity protection, parental leave, …)

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Quantum Technologies