Journal
PHYSICAL REVIEW A
Volume 95, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.95.052121
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In this paper, we give a mechanism for controlling speedup of a single-qubit open quantum system by exclusively manipulating the system-reservoir bound states using additional noninteracting qubits. It is demonstrated that providing stronger bound states in the system-reservoir spectrum makes the single qubit evolve with higher speed. We examine the performance of the mechanism for different spectral densities such as Lorentzian and ohmic and find out the decisive role of bound states' manipulation in the speeding up of quantum evolution.
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