Protection of quantum correlations against decoherence. (English) Zbl 1333.81048
Summary: The protection of different quantum correlations, such as Bell nonlocality, quantum discord, and geometric quantum discord as trace distance against noise, is explored. By weak measurement and quantum measurement reversal, we show that the mentioned quantum correlations can be effectively preserved probabilistically from the decoherence due to amplitude damping. The results will play an important role in the experiments using the quantum correlations as resource.
MSC:
| 81P40 | Quantum coherence, entanglement, quantum correlations |
| 81S22 | Open systems, reduced dynamics, master equations, decoherence |
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