Catalysis in non--local quantum operations

Details Catalysis in non--local quantum operations Catalysis in non--local quantum operations

2001-08-16

arxiv.org/abs/quant-ph/0108077v1

Phys. Rev. Lett. 88 (2002) 167903

Physics

Quantum Physics

4 pages, revtex

Scientific paper

10.1103/PhysRevLett.88.167903

We show how entanglement can be used, without being consumed, to accomplish unitary operations that could not be performed with out it. When applied to infinitesimal transformations our method makes equivalent, in the sense of Hamiltonian simulation, a whole class of otherwise inequivalent two-qubit interactions. The new catalysis effect also implies the asymptotic equivalence of all such interactions.

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