Quantum speed-up based on classical-field and moving-qubit

In this work, we provide a model of a moving-qubit interacting with the multimode cavity, where the qubit is driven by the classical field. We obtain the analytic solution of the density operator of the qubit, then investigate the quantum speed limit time(QSLT) and the non-Markovianity based on the...

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Bibliographic Details
Published in:arXiv.org 2020-01
Main Authors: Yang, Jianhe, Liu, Rongfang, Hong-Mei, Zou, Lin, Danping, Mortezapour, Ali
Format: Article
Language:English
Subjects:
Evolution
Exact solutions
Qubits (quantum computing)
Velocity
Online Access:Get full text
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Summary:In this work, we provide a model of a moving-qubit interacting with the multimode cavity, where the qubit is driven by the classical field. We obtain the analytic solution of the density operator of the qubit, then investigate the quantum speed limit time(QSLT) and the non-Markovianity based on the classical field and the moving-velocity. The results show that the transition from Markovian to non-Markovian dynamics is the intrinsic physical reason of the quantum speed-up process, both of the driving field and the strong coupling can enhance the non-Markovianity in the dynamics process and speed up the evolution of the qubit, but the moving velocity of the qubit can decrease the non-Markovianity in dynamics process and delay the evolution of qubit. To some extent, the classical field can reduce the effect of the moving velocity of the qubit on the quantum evolution process.
ISSN:2331-8422