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A highly motivated early stage researcher with a Master degree in Physics

QUSTEC doctoral training programme for A highly motivated early stage researcher with a Master degree in Physics | term for filing application: 30.09.2020
Consider making the switch to the University of Freiburg: It is one of the most renowned and strongest research universities in Germany, with a history spanning more than 500 years. You'll engage in top-notch research and teaching with a unique spectrum of disciplines, perspectives, and people - right in the heart of one of Germany's most beautiful cities.
The University of Freiburg's human resources policy is oriented toward the principles of equal opportunity and diversity. The university is committed to the goal of creating a family-friendly university.

QUSTEC doctoral training programme for

A highly motivated early stage researcher with a Master degree in Physics
Fulltime position, Start-date: At the earliest possible date.

Specific Requirements

Experience in AMO-physics and knowledge in quantum control are appreciated, however, not required. Vivid interest in quantum effects and technologies are prerequisites.

QUSTEC programme follows MSCA eligibility criteria:

Required level of experience is ‘Early Stage Researcher’ according to the definition in the 2018-2020 work programme of the Marie Skłodowska-Curie actions: Applicants must, at the date of the respective call deadline of QUSTEC, be in the first four years (full-time equivalent research experience) of their research careers and have not yet been awarded a doctoral degree.

Mobility criterion: The applicants must not have resided or carried out their main activity (work, studies, etc.) in the country of the future host organisation for more than 12 months in the 3 years immediately before the call deadline of QUSTEC. Short stays such as holidays are not taken into account. For refugees under the Geneva Convention, the refugee procedure (i.e. before refugee status is conferred) will not be counted as a period of residence/activity in the country of the host organisation.

6.C Experimental Quantum Simulations based on Trapped Ions (& Atoms)


Direct experimental access to the most intriguing and puzzling quantum phenomena is extremely difficult and their numerical simulation on conventional computers can easily become computationally intractable. However, one might gain deeper insight into complex quantum dynamics via experimentally simulating and modelling the quantum behaviour of interest in a second quantum system. There, the significant parameters and interactions are precisely controlled and underlying quantum effects can be detected sufficiently well, thus, their relevance might be revealed. Trapped atomic ions have been shown to be a unique platform for quantum control, evidenced by the most precise operations of quantum information processing and their performance as best atomic clocks.

Still, scaling is the major challenge – i.e. the endeavour to control increasingly large systems of particles at the quantum level will be one of the driving forces for physical sciences in the coming decades. We aim to control charged atoms at the highest level possible to further scale many-body (model) systems ion by ion. This approach is, in a way, the ultimate form of engineering - in radio-frequency traps, as well as in all-optical traps, when combined with ultracold atoms.

Here we propose two alternative experimental projects, both in close collaboration with theorists:

  • We aim at exploiting the extended-dimensionality and tuneable interaction at long range in our basic array of individually trapped and controlled ions, scalable in established CMOS technology [Nat.Commun.7, 11839 (2016), Phys.Rev.Lett.123, 213605 (2019) and Phys.Rev.Lett.123 100504 (2019)]. The plan is to first further investigate the correlations of complexity and scaling, ion by ion, followed by tackling paradigmatic effects in solid-state physics, such as spin-frustration in triangular lattices or quantum dynamics of tunnelling phonons and related Aharonov-Bohm physics to simulate artificial gauge fields [Phys.Rev.Lett.107, 150501 (2011)].
  • (ii) Complementarily, we seek to gain insight into the interaction between ultra-cold atoms and ions in purely optical traps [Phys. Rev. Lett. 124, 053402 (2020)] and into the counter-intuitive emergence of thermalisation in closed quantum systems and its timescales [Phys. Rev. Lett. 117, 170401 (2016), Nature 551, 20 (2017)].

Host organisation

Albert-Ludwigs-Universität Freiburg, Germany

Research areas of the Physics Institute include strong atomic and molecular physics with expertise ranging from mathematical physics over ion trap, Bose-Einstein condensation and Rydberg physics to femtosecond spectroscopy of macromolecular structures, together with the sun physics group, strongly relies on light-matter-interaction for the detailed analysis of complex structures and transport processes on very diverse scales; classical and quantum theory of complex systems, with a strong computational component, joined with experimental polymer science, nano-magnetism and photovoltaic research in the broad context of condensed matter and applied physics.

PhD supervisors: Prof. Tobias Schätz and Prof. Heinz-Peter Breuer

Host group:

How to apply

The application is only valid if submitted via online system:

Please carefully read all application instructions and contact PhD supervisors before submitting the application file.

The deadline for applications is September 30, 2020 at 5PM (Brussels time).

All fellows will be offered a 4-year employment contract with the corresponding social security provisions.

Please send your application in English including supporting documents mentioned above citing the reference number 00001235, by 30.09.2020 at the latest. Please send your application to the following address in written or electronic form:
The application is only valid if submitted via online system:
For further information, please contact Herr Prof.Dr. Tobias Schaetz on the phone number +49 761 203-5815 or E-Mail
General and legal remarks:
Full-time positions may generally be split up into two or more part-time positions, provided that there are no formal or legal barriers. Candidates are selected in accordance with the provisions of the AGG (Allgemeines Gleichbehandlungsgesetz - German General Equal Treatment Act).
Applicants with disabilities (Schwerbehinderte Menschen) will be given preferential consideration in case of equal qualification.
The department offering the position is liable for the content of this job posting. Textual errors do not constitute a basis for any claims or rights. The relevant human resources department has sole responsibility for all legal transactions made within the context of the selection and hiring process.
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