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quant-ph2026

Characterising extremal decoherence by quantum measurement incompatibility

Daniel McNulty, William Townsend, Jukka Kiukas

Decoherence, when viewed in the Heisenberg picture, can turn incompatible measurements into jointly measurable ones. This provides an observable-level description of emergent class…

quant-ph2026

Generalised contextuality of continuous variable quantum theory can be revealed with a single projective measurement

Pauli Jokinen, Mirjam Weilenmann, Martin Plávala +3

Generalized contextuality is a possible indicator of non-classical behaviour in quantum information theory. In finite-dimensional systems, this is justified by the fact that noncon…

quant-ph2025

Characterizing Fisher information of quantum measurement

Rakesh Saini, Jukka Kiukas, Daniel Burgarth +1

Informationally complete measurements form the foundation of universal quantum state reconstruction, while quantum parameter estimation is based on the local structure of the manif…

quant-ph2025

Completeness Stability of Quantum Measurements

Rakesh Saini, Jukka Kiukas, Daniel Burgarth +1

We introduce a resource monotone, the completeness stability, to quantify the quality of quantum measurements within a resource-theoretic framework. By viewing a quantum measuremen…

quant-ph2025

Fisher information from quantum many-particle arrival time measurements

Jukka Kiukas, Andreas Ruschhaupt

We formulate a quantum arrival time measurement process for a Bosonic many-particle system, with the aim of extracting statistical information on single-particle properties. The ar…

quant-ph2024

No-broadcasting characterizes operational contextuality

Pauli Jokinen, Mirjam Weilenmann, Martin Plávala +3

Operational contextuality forms a rapidly developing subfield of quantum information theory. However, the characterization of the quantum mechanical entities that fuel the phenomen…