Disentanglement and decoherence in a pair of qutrits under dephasing noise

Details Disentanglement and decoherence in a pair of qutrits under dephasing noise Disentanglement and decoherence in a pair of qutrits under dephasing noise

2007-09-17

arxiv.org/abs/0709.2703v2

Physics

Quantum Physics

9 pages, submitted to J. Mod. Opt. 01/21/07, accepted 08/14/07 Version 2 corrections: 1) E and D operators in second-to-last p

Scientific paper

We relate disentanglement and decoherence rates in a pair of three-level atoms subjected to multi-local and collective pure dephasing noise acting in a preferred basis. The bipartite entanglement decay rate, as bounded from above by the negativity, is found to be greater than or equal to the dephasing-decoherence rates characterized by the decay of off-diagonal elements in the corresponding full density matrix describing the system or the reduced density matrix describing either qutrit, extending previous results for qubit pairs subject to such noise.

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