Niklas Rohling

Postdoc in the Quantum Transport Group

Research interests

I am working in the fields of spintronics, quantum computing, and quantum information. Especially I am interested in the topics:

  • magnon transport and entanglement,
  • spin qubits,
  • verification methods for quantum devices (e.g. customized quantum state tomography).

Publications and Preprints

- M. Seyed Heydari, W. Belzig, and N. Rohling, "Influence of disorder at Insulator-Metal interface on spin transport", arXiv:2403.19277

- D. Wuhrer, N. Rohling, and W. Belzig, "Dipole-dipole-interaction-induced entanglement between two-dimensional ferromagnets", arXiv:2403.13354

- V. N. Ivanova-Rohling, N. Rohling, and G. Burkard, "Discovery of an exchange-only gate sequence for CNOT with record-low gate time using reinforcement learning", arXiv:2402.10559

- N. Rohling and R. E. Troncoso, "Even-odd effect for spin current through thin antiferromagnetic insulator", Phys. Rev. B 108, 214416 (2023)

- V. N. Ivanova-Rohling, N. Rohling, and G. Burkard, "Quantum State Tomography with Noisy Gates", EPJ Quantum Technology 10, 25(2023)

- D. Wuhrer, N. Rohling, and W. Belzig, "Theory of quantum entanglement and structure of the two-mode squeezed antiferromagnetic magnon vacuum", Phys. Rev. B 105, 054406 (2022)

- V. N. Ivanova-Rohling, G. Burkard, and N. Rohling, "Quantum state tomography as a numerical optimization problem", New J. Phys. 23, 123034 (2021)

- V. N. Ivanova-Rohling and N. Rohling, "Evaluating Machine Learning Approaches for Discovering Optimal Sets of Projection Operators for Quantum State Tomography of Qubit Systems", Cybernetics and Information Technologies 20 (6), 61 (2020)

- E. L. Fjærbu, N. Rohling, A. Brataas. "Superconductivity at metal-antiferromagnetic insulator interfaces", Phys. Rev. B 100, 125432 (2019)

- V. N. Ivanova-Rohling and N. Rohling, "Optimal choice of state tomography quorum formed by projection operators", Phys. Rev. A 100, 032332 (2019)

- N. Rohling, E. L. Fjærbu, and A. Brataas. "Superconductivity induced by interfacial coupling to magnons", Phys. Rev. B 97, 115401 (2018)

- E. L. Fjærbu, N. Rohling, and A. Brataas. "Electrically driven Bose-Einstein condensation of magnons in antiferromagnets", Phys. Rev. B 95, 144408 (2017)

- N. Rohling and G. Burkard. "Optimizing electrically controlled echo sequences for the exchange-only qubit", Phys. Rev. B 93, 205434 (2016)

- N. Rohling, M. Russ, and G. Burkard. "Hybrid spin and valley quantum computing with singlet-triplet qubits", Phys. Rev. Lett. 113, 176801 (2014)

- N. Rohling and G. Burkard. "Tomography scheme for two spin-1/2 qubits in a double quantum dot", Phys. Rev. B 88, 85402 (2013)

- N. Rohling and G. Burkard. "Universal quantum computing with spin and valley states", New J. Phys. 14, 083008 (2012)

- N. Rohling and F. Grossmann. "Optimization of electron pumping by harmonic mixing", Phys. Rev. B 83, 205310 (2011)

Short CV

summer term 2023: substitute professor in the group of Quantum Transport, University of Konstanz

since 03/2019:  Postdoc in the group of Prof. Wolfgang Belzig, University of Konstanz

12/2015-02/2019:  Researcher in Prof. Arne Brataas' group at the Norwegian University of Science and Technology in Trondheim

04/2011-10/2015:  PhD student (since May 2015 Postdoc) in the group of Prof. Guido Burkard, University of Konstanz

03/2011 :         Diplom-Physiker, TU Dresden, Germany