Quantum dynamics as a physical resource

Details Quantum dynamics as a physical resource Quantum dynamics as a physical resource

2002-08-13

arxiv.org/abs/quant-ph/0208077v3

Phys. Rev. A 67, 052301 (2003)

Physics

Quantum Physics

19 pages, shortened by 3 pages, mainly cosmetic changes

Scientific paper

10.1103/PhysRevA.67.052301

How useful is a quantum dynamical operation for quantum information processing? Motivated by this question we investigate several strength measures quantifying the resources intrinsic to a quantum operation. We develop a general theory of such strength measures, based on axiomatic considerations independent of state-based resources. The power of this theory is demonstrated with applications to quantum communication complexity, quantum computational complexity, and entanglement generation by unitary operations.

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