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quant-ph2026

Emergent Problem-Graph Alignment in RL-Discovered Entanglement Topologies for QAOA

Tobias Rohe, Federico Harjes Ruiloba, Markus Baumann +4

In the Quantum Approximate Optimization Algorithm (QAOA), the entanglement topology, where qubit pairs are connected by two-qubit gates, is conventionally set equal to the edge set…

quant-ph2026

Detrimental Agnostic Entanglement: The Case Against Hardware-Efficient Ansätze for Combinatorial Optimization

Tobias Rohe, Markus Baumann, Federico Harjes Ruiloba +3

Variational quantum algorithms (VQAs) for combinatorial optimization routinely employ entangling gates as a default design choice, yet the role of entanglement, in its amount and s…

quant-ph2026

Emergent Cooperation in Quantum Multi-Agent Reinforcement Learning Using Communication

Michael Kölle, Christian Reff, Leo Sünkel +3

Emergent cooperation in classical Multi-Agent Reinforcement Learning has gained significant attention, particularly in the context of Sequential Social Dilemmas (SSDs). While class…

quant-ph2025

Topology-Guided Quantum GANs for Constrained Graph Generation

Tobias Rohe, Markus Baumann, Michael Poppel +3

Quantum computing (QC) promises theoretical advantages, benefiting computational problems that would not be efficiently classically simulatable. However, much of this theoretical s…

quant-ph2025

Evolutionary-Based Circuit Optimization for Distributed Quantum Computing

Leo Sünkel, Jonas Stein, Gerhard Stenzel +3

In this work, we evaluate an evolutionary algorithm (EA) to optimize a given circuit in such a way that it reduces the required communication when executed in the Distributed Quant…

quant-ph2025

Solving graph problems using permutation-invariant quantum machine learning

Maximilian Balthasar Mansky, Tobias Rohe, Gerhard Stenzel +7

Many computational problems are unchanged under some symmetry operation. In classical machine learning, this can be reflected with the layer structure of the neural network. In qua…