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- HUN-REN Wigner Research Centre for PhysicsHU34 papers
- Hungarian Academy of SciencesHU32 papers
- Institute for Solid State Physics and OpticsHU26 papers
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- ELI-HU Research and Development Non-ProfitHU12 papers
- Eötvös Loránd UniversityHU12 papers
- GSI Helmholtz Centre for Heavy Ion ResearchDE11 papers
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4 papers · 2 filters
Minimum-error discrimination between subsets of linearly dependent quantum states
Ulrike Herzog, Janos A. Bergou
A measurement strategy is developed for a new kind of hypothesis testing. It assigns, with minimum probability of error, the state of a quantum system to one or the other of two co…
Optimal unambiguous discrimination between subsets of non-orthogonal quantum states
Yuqing Sun, Janos A. Bergou, Mark Hillery
It is known that unambiguous discrimination among non-orthogonal but linearly independent quantum states is possible with a certain probability of success. Here, we consider a vari…
Photon number conservation and photon interference
Matyas Koniorczyk, Jozsef Janszky
The group theoretical aspect of the description of passive lossless optical four-ports (beam splitters) is revisited. It is shown through an example, that this approach can be usef…
Wigner-function description of quantum teleportation in arbitrary dimensions and continuous limit
M. Koniorczyk, V. Buzek, J. Janszky
We present a unified approach to quantum teleportation in arbitrary dimensions based on the Wigner-function formalism. This approach provides us with a clear picture of all manipul…