We are glad to announce that our paper on "Problem Specific Classical Optimization of Hamiltonian Simulation" has been published in Physical Review Research. In our paper, we introduce a variational algorithm for Hamiltonian simulation. As quantum optimization faces fundamental problem when performe...
A major bottleneck of current NISQ hardware is low fidelity of 2 qubit gates. A component to improve this is the possibility to completely switch off interactions between qubits. In our pre-print we derive conditions for the coupler to suppress all parasitic interactions, i.e. state delocalization a...
In our latest pre-print, we introduce a variational algorithm for Hamiltonian simulation. As quantum optimization faces fundamental problem when performed on a quantum machine, we studied optimization on a classical computer. As opposed to prior work, the presented algorithm is applicable to any loc...
Timo Eckstein, Refik Mansuroglu, Piotr Czarnik, Jian-Xin Zhu, Michael J. Hartmann, Lukasz Cincio, Andrew T. Sornborger, Zoë Holmes
Quantum systems subject to periodic driving exhibit a diverse set of phenomena both of fundamental and technological interest. However, such dynamical systems are mor...
IOPscience's Quantum Science and Technology has accepted and published a new article by Refik Mansuroglu, Timo Eckstein, Ludwig Nützel, Samuel A Wilkinson, and Michael J Hartmann, which introduces a novel technique to efficiently scale variational quantum algorithms to larger systems. The article ca...
The paper “Variational Quantum Eigensolver Ansatz for the J1-J2-model”, a work of our PhD candidate Verena Feulner, was published in Physical Review B.
The J1-J2 quantum spin model goes one step beyond a nearest-neighbor interacting system by introducing next-nearest neighbor interactions along t...
The iX magazine, a well-established format by the German Heise publishing company for a professional IT audience, was putting together a comprehensive introduction on quantum computing from a practical computing perspective as a special edition. It was release on 10th June 2021 (https://www.heise.de...
The paper "Quantum approximate optimization of non-planar graph problems on a planar superconducting processor", on which Michael Streif, a PhD candidate in the Michael J Hartmann theory group, is a co-author, was published in Nature Physics.
In this work, Google’s Sycamore quantum processor was ...
A new Publication by Michael J. Hartmann and Frank Deppe in the german journal "Physik in unserer Zeit" introducing Google Quantum AI's Sycamore quantum processor.
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