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Quantum dynamics of measurements in terms of inter-qubit distances with a collective damping
Solid State Communications ( IF 2.1 ) Pub Date : 2019-12-01 , DOI: 10.1016/j.ssc.2019.113726
K. Berrada

Abstract We examine the influence of inter-qubit distances and reservoir temperature on the dynamics of the parameter estimation for the qubit systems considering the interaction of dipole-dipole and collective damping effect. We find that the dynamical behaviour and preservation of the parameter estimation-precision is greatly dependent on the qubits distances and the temperature of the reservoir. Moreover, we study the effect of the qubits-distance and temperature of the reservoir on the dynamics of the fidelity and squeezing entropy for atomic systems. The obtained results show how the considered physical model in the quantum measurement theory can be useful to describe and implement realistic experiments with optimal conditions.

中文翻译:

具有集体阻尼的量子比特间距离测量的量子动力学

摘要 我们考虑了偶极-偶极子和集体阻尼效应的相互作用,研究了量子比特间距离和储层温度对量子比特系统参数估计动力学的影响。我们发现参数估计精度的动力学行为和保持在很大程度上取决于量子比特距离和储层的温度。此外,我们研究了储层的量子比特距离和温度对原子系统保真度和压缩熵动力学的影响。获得的结果表明,量子测量理论中所考虑的物理模型如何有助于描述和实施具有最佳条件的现实实验。
更新日期:2019-12-01
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