Today in arXiv (arxiv.org/abs/2509.08513), observation of tunable chiral spin textures with nonlinear optics, together with Y. Huang, T. Antao, A. Fumega, M. Turunen, Y. Zhang, H. Fang, N. Shang, J. Arias-Munoz, F. Nigmatulin, H. Hong, A. Kim, F. Ahmed, H. Choi, S. Xiao, K. Liu, and Z. Sun

Featured as Nano Letters cover, from the paper "Hamiltonian learning of triplon excitations in an artificial nanoscale molecular quantum magnet" (pubs.acs.org/doi/10.1021/...), together with Rouven Koch, Robert Drost and Peter Liljeroth

Today in arXiv (arxiv.org/abs/2509.05163), topology and criticality in non-Hermitian multimodal optical resonators through engineered losses, together with Elizabeth Louis Pereira, Hongwei Li, and Andrea Blanco-Redondo.

Published in Nano Letters (pubs.acs.org/doi/10.1021/...), Hamiltonian learning of triplon excitations in an artificial nanoscale molecular quantum magnet, together with Rouven Koch, Robert Drost and Peter Liljeroth

Published in J. Am. Chem. Soc. (pubs.acs.org/doi/full/10....), frustration-Induced many-body degeneracy in spin −1/2 molecular quantum rings, together with D. Li, N. Cao, M. Metzelaars, O. Silveira, J. Jestilä, A. Fumega, T. Nishiuchi, A. Foster, T. Kubo and S. Kawai.

Published in npj 2D Materials and Applications (www.nature.com/articles/s41...), multiferroic nematic d-wave altermagnetism driven by orbital-order in the van der Waals monolayer VCl3, together with Luigi Camerano, Adolfo O. Fumega, Alessandro Stroppa, and Gianni Profeta.

Creating topologically protected photonic devices by engineering optical losses, a collaboration between Aalto University, Nokia Bell Labs and UCF through the Nokia Industrial Doctoral School in Quantum Technology. www.aalto.fi/en/news/rese...

Congratulations to Marcel Niedermeier, Ph.D. researcher at Correlated Quantum Materials and Quantum Transport groups at Aalto, for a wonderful Ph.D. defense. It was great having Dr. Christoph Groth acting as the opponent.

Today in Nature Materials (www.nature.com/articles/s41...), observation of non-Hermitian topology from optical loss modulation, together with Amin Hashemi, Elizabeth Louis Pereira, Hongwei Li, and Andrea Blanco-Redondo

Today in Physical Review B (journals.aps.org/prb/abstract...), electrical probe of spin-spiral order in quantum spin Hall/spin-spiral magnet van der Waals heterostructures, together with Fedor Nigmatulin and Zhipei Sun

Today in arXiv (arxiv.org/abs/2507.04262), solving the Gross-Pitaevskii equation on multiple different scales with tensor networks, together with Marcel Niedermeier, Adrien Moulinas, Thibaud Louvet, and Xavier Waintal

Today in 2D Materials (iopscience.iop.org/article/10.1...), roadmap on quantum magnetic materials, coordinated by Antonija Grubisic Cabo, Marcos Guimaraes, Zeila Zanolli and David Soriano, outcome of the workshop on Quantum Magnetic Materials hosted by the Lorentz Centre in Leiden.

The pre-recorded lectures (www.youtube.com/playlist?lis...) and interactive Jupyter notebooks (github.com/joselado/Adv...) of the "Advanced Quantum Materials" course at Aalto University in 2025 are now available online. Among others, topological matter, superconductivity, and quantum magnetism.

Today in arXiv (arxiv.org/abs/2506.05230), tensor network method for real-space topology in quasicrystal Chern mosaics, together with Tiago V. C. Antão, Yitao Sun, Adolfo O. Fumega

Published in Physical Review Applied (journals.aps.org/prapplied/ab...), Hamiltonian-learning quantum magnets with nonlocal impurity tomography, together with Greta Lupi

The ERC Consolidator Grant "Engineering ultra-quantum materials with multiferroic super-moiré heterostructures" (ULTRATWISTROICS) starts today May 1st (cordis.europa.eu/project/id/1...). The objective, to engineer a super-moiré quantum material to build a universal topological quantum computer.

Today in arXiv (arxiv.org/abs/2504.20711), Hamiltonian learning of triplon excitations in an artificial nanoscale molecular quantum magnet, together with Rouven Koch, Robert Drost and Peter Liljeroth

Today in arXiv (arxiv.org/abs/2504.13675), exploring charge density waves in two-dimensional NbSe2 with machine learning potentials, together with N. Rivano, F. Libbi, C. W. Tan, C. Cheung, A. Mostofi, P. Kim, J. Lischner, A. O. Fumega, B. Kozinsky, and Z. A. H. Goodwin

Superconductivity traverses a single molecule bridge physics.aps.org/articles/v18...

Today in Physical Review Letters (journals.aps.org/prl/abstract...), control of Andreev reflection via a single-molecule orbital, together with Lorenz Meyer, Nicolas Néel, and Jörg Kröger

Today in arXiv (arxiv.org/abs/2504.01635), control of Andreev reflection via a single-molecule orbital, together with Lorenz Meyer, Nicolas Néel, and Jörg Kröger

Today in arXiv (arxiv.org/abs/2503.19987), multiferroic nematic d-wave altermagnetism driven by orbital-order in the van der Waals monolayer VCl3, together with Luigi Camerano, Adolfo O. Fumega, Alessandro Stroppa, and Gianni Profeta.

In the cover of Nano Letters (pubs.acs.org/toc/nalefd/2...), multicomponent magneto-orbital order and magneto-orbitons in monolayer VCl3 (pubs.acs.org/doi/full/10....), together with Luigi Camerano, Adolfo O. Fumega and Gianni Profeta

Published in Physical Review Letters (journals.aps.org/prl/abstract...), topological zero modes and correlation pumping in an engineered Kondo lattice, together with Zina Lippo, Elizabeth Louis Pereira and Guangze Chen

Today in arXiv (arxiv.org/abs/2503.04373), self-consistent tensor network method for correlated super-moire matter beyond one billion sites, together with Yitao Sun, Marcel Niedermeier, Tiago V. C. Antão, and Adolfo O. Fumega

Published in Science Advances (www.science.org/doi/10.1126/...), realization of Heisenberg spin-1/2 antiferromagnetic molecular chains, together with Kewei Sun, Nan Cao, Orlando J. Silveira, Adolfo O. Fumega, Fiona Hanindita, Shingo Ito, Peter Liljeroth, Adam S. Foster, and Shigeki Kawai.

Published in Physical Review Research (journals.aps.org/prresearch/a...), phase diagram of the J1-J2 Heisenberg second-order topological quantum magnet, together with Pascal M. Vecsei

Congratulations to Pascal Vecsei, Ph.D. researcher at Correlated Quantum Materials and Quantum Transport groups at Aalto, for a wonderful Ph.D. defense. It was great having Prof. Cristiane de Morais Smith acting as the opponent.

The next "Atomic-scale quantum materials colloquium" will be on February 24th, with Katharina Kaiser (University of Göttingen, Germany) presenting "Atomic-scale optoelectronics – tuning molecular luminescence with charges" at 10:00 CET asqm-colloquium.aalto.fi

Today in Nano Letters (pubs.acs.org/doi/10.1021/...), multicomponent magneto-orbital order and magneto-orbitons in monolayer VCl3, together with Luigi Camerano, Adolfo O. Fumega and Gianni Profeta

Published in Physical Review B (journals.aps.org/prb/abstract...), Lee-Yang formalism for phase transitions of interacting fermions using tensor networks, together with Pascal M. Vecsei and Christian Flindt

Today in arXiv (arxiv.org/abs/2502.02383), electrical probe of spin-spiral order in quantum spin Hall/spin-spiral magnet van der Waals heterostructures, together with Fedor Nigmatulin and Zhipei Sun

Today in Physical Review Letters (journals.aps.org/prl/abstract...), doped Mott phase and charge correlations in monolayer 1T-NbSe2, together with Xin Huang, Jani Sainio, Peter Liljeroth, and Somesh Chandra Ganguli

Today in arXiv (arxiv.org/abs/2501.09505), transfer learning of many-body electronic correlation entropy from local measurements, together with Faluke Aikebaier and Teemu Ojanen.

The pre-recorded lectures (www.youtube.com/watch?v=yzWw...) and interactive Jupyter notebooks (github.com/joselado/Adv...) on "Quantum many body and tensor networks" from the Aalto M.Sc. course in 2024 are available online. Among others, Hubbard models, quantum magnets, and quantum entanglement.

The next "Atomic-scale quantum materials colloquium" will be on January 20th, with Feng Wang (UC Berkeley, US) presenting "Electron solids in atomically thin semiconductors" at 16:00 CET asqm-colloquium.aalto.fi

Today in arXiv (arxiv.org/abs/2412.18020), roadmap on quantum magnetic materials, coordinated by Antonija Grubisic Cabo, Marcos Guimaraes, Zeila Zanolli and David Soriano, outcome of the workshop on Quantum Magnetic Materials hosted by the Lorentz Centre in Leiden.

Today in 2D Materials (iopscience.iop.org/article/10.1...), correlated states in super-moire materials with a kernel polynomial quantics tensor cross interpolation algorithm, together with Adolfo O. Fumega and Marcel Niedermeier.

Computing topological quantum materials with the Finnish Quantum Computing Infrastructure www.aalto.fi/en/news/in-a...

Today at Physical Review Research (journals.aps.org/prresearch/a...), quantum computing topological invariants of two-dimensional quantum matter, together with Marcel Niedermeier, Marc Nairn, and Christian Flindt.

Twisted multiferroics discovery makes new kinds of topological spintronic devices possible www.aalto.fi/en/news/twis...

Today in arXiv (arxiv.org/abs/2412.07666), Hamiltonian learning quantum magnets with non-local impurity tomography, together with Greta Lupi.

Today in Physical Review Letters (journals.aps.org/prl/abstract...), spin texture in supramolecular metal complexes on a 2D superconductor, together with V Vaňo, S Reale, O Silveira, D Longo, M Amini, M Kelai, J Lee, A Martikainen, S Kezilebieke, A Foster, F Donati, P Liljeroth and L Yan.

Engineering exotic qubit alternatives based on super-moire quantum materials with new European Research Council funding www.aalto.fi/en/news/quan...

The next "Atomic-scale quantum materials colloquium" will be on December 2nd, with Yujeong Bae (EMPA, Switzerland) presenting "Harnessing surface spins for quantum sensing and coherent control" at 10:00 CET asqm-colloquium.aalto.fi

Published in Nano Letters (pubs.acs.org/doi/10.1021/...), electric field control of moiré skyrmion phases in twisted multiferroic NiI2 bilayers, together with Tiago V. C. Antao and Adolfo O. Fumega.

Today at Physical Review Research (journals.aps.org/prresearch/a...), many-body Liouvillian dynamics with a non-Hermitian tensor-network kernel polynomial algorithm, together with Guangze Chen and Fei Song.