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- Centre National de la Recherche ScientifiqueFR493 papers
- National Institute for AstrophysicsIT482 papers
- Instituto de Astrofísica de CanariasES462 papers
- Aalto UniversityFI432 papers
- University of PaduaIT407 papers
- Universidad de La LagunaES383 papers
- California Institute of TechnologyUS356 papers
- Stockholm UniversitySE351 papers
- Turku Centre for Computer ScienceFI349 papers
- Institute of Space SciencesES329 papers
- European Southern ObservatoryCL317 papers
- Osservatorio Astronomico di PadovaIT317 papers
8 papers · 2 filters
The phase representation of covariant phase observables
Juha-Pekka Pellonpaa
Covariant phase observables are obtained by defining simple conditions for mappings from the set of phase wave functions (unit vectors of the Hardy space) to the set of phase proba…
The uniqueness question in the multidimensional moment problem with applications to phase space observables
Anatolij Dvurecenskij, Pekka Lahti, Kari Ylinen
The theory of holomorphic functions of several complex variables is applied in proving a multidimensional variant of a theorem involving an exponential boundedness criterion for th…
On the structure of covariant phase observables
Juha-Pekka Pellonpaa
We study the mathematical structure of covariant phase observables. Such an observable can alternatively be expressed as a phase matrix, as a sequence of unit vectors, as a sequenc…
Removal of a single photon by adaptive absorption
John Calsamiglia, Stephen M. Barnett, Norbert Lütkenhaus +1
We present a method to remove, using only linear optics, exactly one photon from a field-mode. This is achieved by putting the system in contact with an absorbing environment which…
The Pegg-Barnett Formalism and Covariant Phase Observables
Pekka Lahti, Juha-Pekka Pellonpaa
We compare the Pegg-Barnett (PB) formalism with the covariant phase observable approach to the problem of quantum phase and show that PB-formalism gives essentially the same result…
Covariant localizations in the torus and the phase observables
G. Cassinelli, E. De Vito, P. Lahti +1
We describe all the localization observables of a quantum particle in a one-dimensional box in terms of sequences of unit vectors in a Hilbert space. An alternative representation…