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publications
Ab initio simulation of spin-charge qubits based on bilayer graphene-WSe2 quantum dots
Published in npj 2D Materials and Applications 9 (1), 47, 2025
In this paper we investigated a WSe2 heterostructure and proposed a novel scheme two define hyperentanglement between charge and spin.
Recommended citation: Ge, H., Koopmann, P., Mrcarica, F., Schmidt, O. T. P., Bouquet, I., Dossena, M., Luisier, M. and Cao, J. Ab initio simulation of spin-charge qubits based on bilayer graphene-WSe2 quantum dots. npj 2D Mater Appl 9, 47 (2025). https://doi.org/10.1038/s41699-025-00568-y
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Dynamic rephasing in a telecom warm vapor quantum memory
Published in arXiv preprint, 2026
We introduce and experimentally demonstrate a dynamic rephasing protocol that counteracts Doppler dephasing in a telecom-band ORCA quantum memory, extending storage time by a factor of 50 while preserving GHz bandwidth and low noise.
Recommended citation: Ilse Maillette de Buy Wenniger, Paul Burdekin, Shicheng Zhang, Mikhael J. Rasiah, Anindya Rastogi, Otto T.P. Schmidt, Patrick M. Ledingham, Ian A. Walmsley, and S.E. Thomas. Dynamic rephasing in a telecom warm vapor quantum memory. arXiv:2604.13900 (2026).
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Benchmarks in Leipzig
Published in arXiv preprint, 2026
We present a dataset of 100 research-level mathematics questions with known answers and evaluate current LLMs on them in three stages.
Recommended citation: Andrei Balakin et al. Benchmarks in Leipzig. arXiv:2606.05818 (2026).
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Degree of tensor train varieties via integral geometry
Published in arXiv preprint, 2026
Using methods from integral geometry, we obtain a combinatorial expression for the degrees of tensor train varieties.
Recommended citation: Andrea Rosana and Otto T.P. Schmidt. Degree of tensor train varieties via integral geometry. arXiv:2606.11847 (2026).
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Excitation spectra and rank tomography of linear matrix product tangent spaces
Published in arXiv preprint, 2026
We present an algebro-geometric perspective on MPS tangent-space methods for reconstruction of excitation spectra.
Recommended citation: Otto T.P. Schmidt and Iacopo Carusotto. Excitation spectra and rank tomography of linear matrix product tangent spaces. arXiv:2607.05269 (2026).
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Equations of Tree Tensor Network Varieties
Published in arXiv preprint, 2026
We show that tree tensor network varieties, including tensor train varieties, are general Markov models associated to spaced trees. This allows us to prove that the prime ideals of these varieties are generated by minors of matrix flattenings. In the case of tensor train varieties, we discuss whether these minors form a Gröbner basis and provide a combinatorial method to compute the degree for order 3 tensor trains.
Recommended citation: Serkan Hoşten, Niharika Chakrabarty Paul, Otto T. P. Schmidt and Dmitry Skurt. Equations of Tree Tensor Network Varieties. arXiv:2608.19071 (2026).
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talks
Beyond Gutzwiller: Explolring correlated excitations with perturbative MPS
Published:
Contributed talk at this conference
Excitation spectra of non-uniform correlated many-body systems using linearised MPS Permalink
Published:
Contributed talk at this conference
Degree of tensor train varieties using random algebraic geometry
Published:
Contributed talk at INABAG
Degree of tensor train varieties using random algebraic geometry
Published:
Contributed talk at Oxford Algebraic Geometry Days
teaching
Teaching experience 1
Undergraduate course, University 1, Department, 2014
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Teaching experience 2
Workshop, University 1, Department, 2015
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