Entanglement changing power of two-qubit unitary operations
Quantum Physics
2009-11-10 v1
Abstract
We consider a two-qubit unitary operation along with arbitrary local unitary operations acts on a two-qubit pure state, whose entanglement is C_0. We give the conditions that the final state can be maximally entangled and be non-entangled. When the final state can not be maximally entangled, we give the maximal entanglement C_max it can reach. When the final state can not be non-entangled, we give the minimal entanglement C_min it can reach. We think C_max and C_min represent the entanglement changing power of two-qubit unitary operations. According to this power we define an order of gates.
Keywords
Cite
@article{arxiv.quant-ph/0403163,
title = {Entanglement changing power of two-qubit unitary operations},
author = {M. -Y. Ye and Dong Sun and Y. -S. Zhang and G. -C. Guo},
journal= {arXiv preprint arXiv:quant-ph/0403163},
year = {2009}
}
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11 pages