4 papers · 1 filter
Measurement-driven Quantum Approximate Optimization
Tobias Stollenwerk, Stuart Hadfield
Algorithms based on non-unitary evolution have attracted much interest for ground state preparation on quantum computers. One recently proposed method makes use of ancilla qubits a…
Quantum combinatorial optimization beyond the variational paradigm: simple schedules for hard problems
Tim Bode, Krish Ramesh, Tobias Stollenwerk
Advances in quantum algorithms suggest a tentative scaling advantage on certain combinatorial optimization problems. Recent work, however, has also reinforced the idea that barren…
Performance of Domain-Wall Encoding for Quantum Annealing
Jie Chen, Tobias Stollenwerk, Nicholas Chancellor
In this paper we experimentally test the performance of the recently proposed domain-wall encoding of discrete variables from [Chancellor Quantum Sci. Technol. 4 045004] on Ising m…
Embedding of Complete Graphs in Broken Chimera Graphs
Elisabeth Lobe, Lukas Schürmann, Tobias Stollenwerk
In order to solve real world combinatorial optimization problems with a D-Wave quantum annealer it is necessary to embed the problem at hand into the D-Wave hardware graph, namely…