Enhancement of the Quantum Coherence of the Rydberg Atoms System by Weak Measurement,Annalen Der Physik

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Enhancement of the Quantum Coherence of the Rydberg Atoms System by Weak Measurement
Annalen Der Physik ( IF 2.2 ) Pub Date : 2021-01-25 , DOI: 10.1002/andp.202000463
Qi Chen ₁ , Jing‐Bo Xu ₁

Affiliation

The influence of weak measurement along with quantum measurement reversal on the Rydberg atoms system is investigated, and is found to have an important practical significance as both weak measurement along with quantum measurement reversal and Rydberg atoms system can be experimentally realized. The quantum coherence and the entropic uncertainty relation of the system are explored, and it is found that the quantum coherence of the system is enhanced and the values of uncertainty and the uncertainty bound are reduced under some particular weak measurements along with quantum measurement reversals. This indicates that the decoherence effect of the system can be weakened by weak measurement along with quantum measurement reversal. Furthermore, the trace distance which is a reflection of the entanglement is also examined, and it is shown that weak measurement along with quantum measurement reversal can improve the entanglement of the system.

中文翻译：

通过弱测量增强里德伯格原子系统的量子相干性

研究了弱测量和量子测量逆转对Rydberg原子系统的影响，发现其具有重要的实际意义，因为可以通过实验实现弱测量和量子测量逆转以及Rydberg原子系统。探索了系统的量子相干性和熵不确定性关系，发现在某些特殊的弱测量以及量子测量逆转的情况下，系统的量子相干性得到了增强，不确定性和不确定性界的值减小了。这表明可以通过弱测量和量子测量反转来减弱系统的退相干效应。此外，还检查了反映缠结的走线距离，

更新日期：2021-03-11

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