摘要
We investigate the nonlocal advantage of quantum coherence(NAQC)and entanglement for two spins coupled via the Heisenberg interaction and under the intrinsic decoherence.Solutions of this decoherence model for the initial spin-1/2 and spin-1 maximally entangled states are obtained,based on which we calculate the NAQC and entanglement.In the weak region of magnetic field,the NAQC behaves as a damped oscillation with the time evolves,while the entanglement decays exponentially(behaves as a damped oscillation)for the spin-1/2(spin-1)case.Moreover,the decay of both the NAQC and entanglement can be suppressed significantly by tuning the magnetic field and anisotropy of the spin interaction to some decoherence-rate-determined optimal values.
作者
李保民
胡明亮
范桁
Bao-Min Li;Ming-Liang Hu;Heng Fan(Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China;Songshan Lake Materials Laboratory,Dongguan 523808,China)
基金
the National Natural Science Foundation of China(Grant Nos.11774406 and 11934018)
the National Key Research and Develepment Program of China(Grant Nos.2016YFA0302104 and 2016YFA0300600)
the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB28000000)
the Research Program of Beijing Academy of Quantum Information Sciences(Grant No.Y18G07)。
