Robustness of quantum correlations against decoherence
arXiv:1111.2646 · doi:10.1016/j.aop.2011.11.001
Abstract
We study dynamics of nonclassical correlations by exactly solving a model consisting of two atomic qubits with spontaneous emission. We find that the nonclassical correlations defined by different measures give different qualitative characterizations of those correlations. The relative behaviors of those correlation measures are presented explicitly for various quantum states in the two-qubit atomic system. In particular, we find that the robustness of quantum correlations can be greatly enhanced by performing appropriate local unitary operations on the initial state of the system.
7 pages, 6 figures
References in corpus (10)
- Finite-Time Disentanglement via Spontaneous Emission
- Quantum discord and the power of one qubit
- Necessary and sufficient condition for non-zero quantum discord
- Quantum Open System Theory: Bipartite Aspects
- Robustness of quantum discord to sudden death
- Classical and quantum correlations under decoherence
- Dark periods and revivals of entanglement in a two qubit system
- Quantum discord for general two--qubit states: Analytical progress
- Linking Quantum Discord to Entanglement in a Measurement
- Quantum discord and geometry for a class of two-qubit states
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