Disentanglement and decoherence in two-spin and three-spin systems under dephasing

Details Disentanglement and decoherence in two-spin and three-spin systems under dephasing Disentanglement and decoherence in two-spin and three-spin systems under dephasing

2007-03-23

arxiv.org/abs/quant-ph/0703216v1

Physical Review B 75, 115307 (2007)

Physics

Quantum Physics

17 pages

Scientific paper

10.1103/PhysRevB.75.115307

We compare disentanglement and decoherence rates within two-spin and three-spin entangled systems subjected to all possible combinations of local and collective pure dephasing noise combinations. In all cases, the bipartite entanglement decay rate is found to be greater than or equal to the dephasing-decoherence rates and often significantly greater. This sharpens previous results for two-spin systems [T. Yu and J. H. Eberly Phys. Rev. B 68, 165322 (2003)] and extends them to the three-spin context.

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