Modern Physics Letters A

The quantum speed limit time of a two-qubit XYZ spin chain with intrinsic decoherence

Lu Hou, Bin Shao, Yuguang Zhu

Published Aug 17, 2020• 1 citation

Abstract

We study the quantum speed limit (QSL) time of the two-qubit XYZ spin chain model with the influence of intrinsic decoherence. We show that the intrinsic decoherence can suppress the evolution of this system, no matter what initial states the two qubits start from. The investigation of entanglement reveals that quantum correlation is the physical reason for the acceleration of the system. In addition, we also demonstrate that for different initial states, external magnetic field may have opposite influence on QSL time and it mainly derives from the inhibition of entanglement as magnetic field increases.

DOI: 10.1142/s0217732320502442

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