Stabilizing Quantum Information

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  • 20 October 2000
Abstract
The notion of entanglement can be naturally lifted from quantum-states to the level of general quantum evolutions. This is achieved by considering multi-partite unitary transformations as elements of a multi-partite Hilbert space and then extended to general quantum operations. We show that this entanglement is related to the entangling capabilities of the quantum evolution in a simple way.

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