原子与分子物理学报2016，Vol.33Issue(4)：681-688,8.DOI:10.3969/j.issn.1000-0364.2016.08.019
三量子比特系统中单个谐振子诱导的量子关联
Quantum correlations induced by a single harmonic oscillator in three qubits
摘要
Abstract
We consider a system of three uncorrelated qubits coupled to a common environment of a single har -monic oscillator.By studying the effects of qubts -environment coupling strength and initial state of the qubits on quantum correlations , we find that the environment can induce quantum correlations , propose and prove four propositions to demonstrate how the single harmonic oscillator mediate the distribution of quantum correlations a -mong three qubits.We obtain the condition under which quantum correlations in any two qubits can be estab -lished.Especially , for weak coupling , we can achieve much amount of quantum correlations between qubits , while the environment remains isolated always from the system .In general , the dynamics of quantum correlations are complicated due to the two competing roles of the environment: inducing entanglement between the qubits and making them decoherent which destroys quantum correlations .关键词
量子关联/量子失协/自旋-泊松模型/谐振子Key words
Quantum correlations/Quantum discord/Spin-boson model/Harmonic oscillator分类
物理学引用本文复制引用
王梦真,李福林,陈中,王成志..三量子比特系统中单个谐振子诱导的量子关联[J].原子与分子物理学报,2016,33(4):681-688,8.基金项目
湖南省自然科学基金（12JJ3004）；长沙理工大学近地空间电磁环境监测与建模湖南省普通高校重点实验室开放基金资助项目． （）
