389 citations · 2.4k across the 57 of their papers we have counts for
56 papers · 1 filter
Specifying the Intrinsic Back-action of a General Measurement
Liang-Liang Sun, Armin Tavakoli, René Schwonnek +3
Understanding the invasive nature of quantum measurement and its implications in quantum foundations and information science demands a mathematically rigorous and physically well-g…
User-friendly confidence regions for quantum state tomography
Carlos de Gois, Matthias Kleinmann
Quantum state tomography is the standard technique for reconstructing a quantum state from experimental data. In the regime of finite statistics, experimental data cannot give perf…
Possible consequences for physics of the negative resolution of Tsirelson's problem
Adán Cabello, Marco Túlio Quintino, Matthias Kleinmann
In 2020, Ji et al. [arXiv:2001.04383 and Comm.~ACM 64}, 131 (2021)] provided a proof that the complexity classes and are equivalent. This result impli…
Certifying the activation of Bell nonlocality with finite data
Jonathan Steinberg, H. Chau Nguyen, Matthias Kleinmann
The activation of Bell nonlocality is a protocol that enables the violation of a Bell inequality from a system that initially did not allow for any such violation because the state…
Comparison of confidence regions for quantum state tomography
Jessica O. de Almeida, Matthias Kleinmann, Gael Sentís
The quantum state associated to an unknown experimental preparation procedure can be determined by performing quantum state tomography. If the statistical uncertainty in the data d…
Generalized dynamical theories in phase space and the hydrogen atom
Martin Plávala, Matthias Kleinmann
We show that the phase-space formulation of general probabilistic theories can be extended to include a generalized time-evolution and that it can describe a nonquantum hydrogen-li…