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- Centre National de la Recherche ScientifiqueFR493 papers
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21 papers · 2 filters
Operational restrictions in general probabilistic theories
Sergey N. Filippov, Stan Gudder, Teiko Heinosaari +1
The formalism of general probabilistic theories provides a universal paradigm that is suitable for describing various physical systems including classical and quantum ones as parti…
Phase covariant qubit dynamics and divisibility
S. N. Filippov, A. N. Glinov, L. Leppäjärvi
Phase covariant qubit dynamics describes an evolution of a two-level system under simultaneous action of pure dephasing, energy dissipation, and energy gain with time-dependent rat…
Quantum random access codes and incompatibility of measurements
Claudio Carmeli, Teiko Heinosaari, Alessandro Toigo
We prove that quantum random access code (QRAC) performs better than its classical counterpart only when incompatible quantum measurements are used in the decoding task. As a conse…
Symmetry and block structure of the Liouvillian superoperator in partial secular approximation
Marco Cattaneo, Gian Luca Giorgi, Sabrina Maniscalco +1
We address the structure of the Liouvillian superoperator for a broad class of bosonic and fermionic Markovian open systems interacting with stationary environments. We show that t…
Quantum frequency estimation with conditional states of continuously monitored independent dephasing channels
Francesco Albarelli, Matteo A. C. Rossi, Marco G. Genoni
We discuss the problem of estimating a frequency via N-qubit probes undergoing independent dephasing channels that can be continuously monitored via homodyne or photo-detection. We…
All quantum resources provide an advantage in exclusion tasks
Roope Uola, Tom Bullock, Tristan Kraft +2
A key ingredient in quantum resource theories is a notion of measure. Such as a measure should have a number of fundamental properties, and desirably also a clear operational meani…