The quantum entropic uncertainty relation and entanglement witness in the two-atom system coupling with the non-Markovian environments
| Autor: | Hong-Mei Zou, Bai-Yuan Yang, Mao-Fa Fang, You-Neng Guo, Shi-Yang Zhang, Wei He |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Coupling Quantum Physics Markov process FOS: Physical sciences Quantum entanglement Condensed Matter Physics Upper and lower bounds Atomic and Molecular Physics and Optics symbols.namesake Quantum cryptography symbols Statistical physics Entropic uncertainty Quantum Physics (quant-ph) Quantum Mathematical Physics Entanglement witness |
| DOI: | 10.48550/arxiv.1811.01155 |
| Popis: | The quantum entropic uncertainty relation and entanglement witness in the two-atom system coupling with the non-Markovian environments are studied by the time-convolutionless master-equation approach. The influence of non-Markovian effect and detuning on the lower bound of the quantum entropic uncertainty relation and entanglement witness is discussed in detail. The results show that, only if the two non-Markovian reservoirs are identical, increasing detuning and non-Markovian effect can reduce the lower bound of the entropic uncertainty relation, lengthen the time region during which the entanglement can be witnessed, and effectively protect the entanglement region witnessed by the lower bound of the entropic uncertainty relation. The results can be applied in quantum measurement, quantum cryptography task and quantum information processing. Comment: 11 pages, 4 figures |
| Databáze: | OpenAIRE |
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