condensed matter theory

At neQxt, our theory team explores the principles that make scalable quantum computing possible. We focus on logical-qubit systems: developing quantum error correcting codes, decoding methods, and logical gate constructions, and studying the mathematical structures that underlie them. Our work aims to deepen the understanding of how fragile quantum information can be preserved over long timescales and across large systems. By advancing the theoretical foundations of quantum fault tolerance, we contribute to both the science of quantum information and the long-term vision of reliable quantum computing.

We have a PhD opening for a motivated student with a Master's Degree in Physics, Quantum Engineering, Quantum Information Science to join the **Quantum Information and Matter Group headed by Prof. Peter P. Orth at Saarland University, which offers a unique interdisciplinary research environment in quantum information science with groups in computer science, mathematics and physics. The successful applicant will conduct research at the interface of quantum information science and condensed matter theory. Specific research directions include quantum algorithms for the simulation of quantum materials and many-body systems. A focus lies on the implementation of these algorithms on current noisy intermediate-scale and near-term early fault-tolerant quantum hardware including the development and use of quantum error mitigation and quantum error correction methods.

We are looking for a motivated postdoctoral researcher with a PhD Degree in Physics (or a related field) to join the Quantum Information and Matter Group headed by Prof. Peter P. Orth at Saarland University. This is a broad search and potential research directions include quantum algorithms for the simulation of many-body systems and their implementations on current hardware, nonequilibrium dynamics and nonlinear response of correlated quantum matter and light-control of quantum materials. The research entails both analytical and numerical work. The successful candidate will have excellent verbal and written communication skills in English or German and will be able to communicate to a wide variety of audiences. The individual must be able to work effectively with team members.

OpenSuperQ+ is ambitious project to build the first powerful quantum computer of more than 1000 qubits: https://www.opensuperqplus.eu .

The contribution of PGI-2 led by Dr. Ansari

https://sites.google.com/site/mansari

is scientific lead to simulate a precise model for the quantum processor, aiming at constructing new schemes to better qubits and gates.

We are offering one PhD position to well-qualified, highly motivated, and dynamic early career researcher who wish to enhance their scientific career in a stimulating top environment.

We are inviting applications for two PhD positions on quantum dynamics in the group Qhaos led by Silvia Pappalardi.

Several questions lie at the interface between quantum information theory and the dynamics of out-of-equilibrium many-body physics. How does quantum chaos emerge in the dynamics of many particles stems? Can we use quantum correlations to challenge classical dynamics? Our group is interested in the study of many-body dynamics using tools of statistical mechanics and quantum information, in particular entanglement.

We are looking for a highly motivated and ambitious Ph.D. student in quantum condensed matter theory for a project on superconducting spintronics. The overall aim of the Ph.D. project is to theoretically explore and engineer enhanced and entirely new spintronics functionalities using superconducting hybrid structures. In spintronics, the electron spin instead of its charge is controlled and manipulated, which is both faster and more energy-efficient than today’s charge-based electronics.

Applicants are invited to join the condensed matter theory group to explore the use of near-term quantum computers in the study of quantum many-body physics.

In the process of setting up a new quantum optics theory group, I am searching for outstanding PhD students to work on the following topics
- Quantum simulation with quantum optics setups, in particular of lattice gauge theories
- Design of protocols for measuring entanglement in cold quantum gases
- Theory of quantum many-body systems (non-equilibrium dynamics, periodically driven systems, exotic quantum phases, characterization through entanglement)