Modulating quantum evolution of moving-qubit by using classical driving
Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, 410081, Changsha, People’s Republic of China
2 School of Physics and Electronics, Central South University, 410083, Changsha, People’s Republic of China
3 School of Physical Science and Technology, Lanzhou University, 730000, Lanzhou, People’s Republic of China
4 Department of Physics, University of Guilan, P.O. Box 41335-1914, Rasht, Iran
Accepted: 19 January 2023
Published online: 3 February 2023
In this work, we study quantum evolution of an open moving-qubit modulated by a classical driving field. We obtain the density operator of qubit at zero temperature and analyze its quantum evolution dynamics by using quantum speed limit time (QSLT) and a non-Markovianity measure introduced recently. The results show that both the non-Markovian environment and the classical driving can speed up the evolution process, this quantum speedup process is induced by the non-Markovianity and the critical points only depend on the qubit velocity. Moreover, the qubit motion will delay the evolution process, but this negative effect of the qubit velocity on the quantum speedup can be suppressed by the classical driving. Finally, we give the corresponding physical explanation by using the decoherence rates.
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