Quantum relative positioning in Hilbert space

Details Quantum relative positioning in Hilbert space Quantum relative positioning in Hilbert space

2005-02-23

arxiv.org/abs/quant-ph/0502149v3

Phys. Rev. A, 72, 042319 (2005)

Physics

Quantum Physics

5 pages, 1 figure; new material added: in particular we present an application of quantum movers in the context of separabilit

Scientific paper

A new class of state transformations that are quantum mechanically prohibited is introduced. These can be seen as the generalization of the universal-NOT transformation which, for all pure inputs state of a given Hilbert space produces pure outputs whose projection on the original state is fixed to a value smaller than one. The case of not pure output states is also addressed. We give an application of these transformations in the context of separability criteria.

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