Catalysis in nonlocal quantum operations

Vidal, G. and Cirac, J. I. (2002-04-22) Catalysis in nonlocal quantum operations. Physical Review Letters, 88 16: 167903-1-167903-4.

Document type:	Journal Article
Collections:	Excellence in Research Australia (ERA) - Collection School of Physical Sciences Publications

Author(s)	Vidal, G. Cirac, J. I.
Title	Catalysis in nonlocal quantum operations
Journal name	Physical Review Letters
Publication date	2002-04-22
Sub-type	Article
Volume number	88
Issue number	16
ISSN	0031-9007
Start page	167903-1
End page	167903-4
Total pages	4
Place of publication	College Pk
Publisher	American Physical Society
Language	eng
Subject	240000 Physical Sciences
Abstract	We show how entanglement can be used, without being consumed, to accomplish unitary operations that could not be performed without 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.
Keyword(s)	Physics, Multidisciplinary Entanglement