840 citations
- Blekinge Institute of TechnologySE8 papers
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Showing 1999Show all
3 papers · 1 filter
quant-ph1999★ 178 cited
Local environment can enhance fidelity of quantum teleportation
Piotr Badziag, Michal Horodecki, Pawel Horodecki +1
We show how an interaction with the environment can enhance fidelity of quantum teleportation. To this end, we present examples of states which cannot be made useful for teleportat…
quant-ph1999
Quantum finite multitape automata
Andris Ambainis, Richard Bonner, Rusins Freivalds +2
Quantum finite automata were introduced by C.Moore, J.P. Crutchfield, and by A.Kondacs and J.Watrous. This notion is not a generalization of the deterministic finite automata. More…
gr-qc1999★ 17 cited
On the Causal Propagation of Fields
G. Bergqvist, J. M. M. Senovilla
By using geometric methods and superenergy tensors, we find new simple criteria for the causal propagation of physical fields in spacetimes of any dimension. The method can be appl…