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- Centre National de la Recherche ScientifiqueFR493 papers
- National Institute for AstrophysicsIT482 papers
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- Aalto UniversityFI432 papers
- University of PaduaIT407 papers
- Universidad de La LagunaES383 papers
- California Institute of TechnologyUS356 papers
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23 papers · 2 filters
Minimal covariant observables identifying all pure states
Claudio Carmeli, Teiko Heinosaari, Alessandro Toigo
It has been recently shown that an observable that identifies all pure states of a d-dimensional quantum system has minimally 4d-4 outcomes or slightly less (the exact number depen…
Nonlocal memory effects allow perfect teleportation with mixed states
Elsi-Mari Laine, Heinz-Peter Breuer, Jyrki Piilo
We show that perfect quantum teleportation can be achieved with mixed photon polarization states when nonlocal memory effects influence the dynamics of the quantum system. The prot…
Comparing the degrees of incompatibility inherent in probabilistic physical theories
Paul Busch, Teiko Heinosaari, Jussi Schultz +1
We introduce a new way of quantifying the degrees of incompatibility of two ob- servables in a probabilistic physical theory and, based on this, a global measure of the degree of i…
When do pieces determine the whole? Extremal marginals of a completely positive map
Erkka Haapasalo, Teiko Heinosaari, Juha-Pekka Pellonpää
We will consider completely positive maps defined on tensor products of von Neumann algebras and taking values in the algebra of bounded operators on a Hilbert space and particular…
Optimal state pairs for non-Markovian quantum dynamics
Steffen Wissmann, Antti Karlsson, Elsi-Mari Laine +2
We study a recently proposed measure for the quantification of quantum non-Markovianity in the dynamics of open systems which is based on the exchange of information between the op…
Strongly Incompatible Quantum Devices
Teiko Heinosaari, Takayuki Miyadera, Daniel Reitzner
The fact that there are quantum observables without a simultaneous measurement is one of the fundamental characteristics of quantum mechanics. In this work we expand the concept of…