Abstract
A physical model for a two-level atom simultaneously coupled to multiple Bosonic reservoirs is investigated. The explicit expression of quantum speed limit is obtained. Analysis show that as long as the number of reservoirs satisfies certain conditions, whether it is strong coupling or weak coupling, the system will show a non-Markovian effect. Numerical simulation show that the non-Markovian effect of the system increases with the increase of reservoir number. Further investigation shows that the stronger the non-Markovian effect is, the faster the evolution acceleration of quantum system will be.
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Acknowledgments
This work is financially supported by the National Natural Science Foundation of China (Grant No. 61605019), the China Postdoctoral Science Foundation (Grant No. 2017M622582), the Research Foundation of Education Bureau of Hunan Province, China (Grants No. 18B601,16B177 and 16B023). Qiong Wang is supported by the Program of Hehua Excellent Young Talents, Changsha Normal University.
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Hu, PH., Peng, GF., He, Z. et al. Quantum Speed Limit of a Two-Level System Interacting with Multiple Bosonic Reservoirs. Int J Theor Phys 59, 321–330 (2020). https://doi.org/10.1007/s10773-019-04325-y
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DOI: https://doi.org/10.1007/s10773-019-04325-y