駐波場中囚禁離子的Wigner-Yanase偏態(tài)信息
發(fā)布時間:2018-08-26 17:41
【摘要】:研究了駐波場中囚禁離子的Wigner-Yanase偏態(tài)信息并得到了其恢復周期,發(fā)現(xiàn)此周期與離子布居數(shù)反轉(zhuǎn)的恢復時間相同。對解析解與數(shù)值模擬進行分析,發(fā)現(xiàn)Wigner-Yanase偏態(tài)信息的恢復時間隨Lamb-Dicke參數(shù)的增大而減小,隨離子平均振動聲子數(shù)的增大而增大;當離子質(zhì)心從駐波場波節(jié)移向波腹時,Wigner-Yanase偏態(tài)信息的恢復時間變長。從理論上證明了囚禁離子振動態(tài)處于相干態(tài)時離子初始偏態(tài)信息恒為1/2,分析了離子與駐波激光場之間的量子糾纏特性。
[Abstract]:The Wigner-Yanase bias information of trapped ions in standing wave field is studied and the recovery period is obtained. It is found that this period is the same as the recovery time of ion population inversion. The analytical solution and numerical simulation show that the recovery time of Wigner-Yanase skew information decreases with the increase of Lamb-Dicke parameters and increases with the increase of the average number of vibrational phonons. The recovery time of Wigner-Yanase bias information becomes longer when the ion centroid moves from the standing wave field to the wave belly. It is proved theoretically that the initial skewness information of the ion is always 1 / 2 when the trapped ion vibration is in the coherent state. The quantum entanglement between the ion and the standing wave laser field is analyzed.
【作者單位】: 江蘇科技大學應(yīng)用物理系;
【基金】:國家自然科學基金,11205071~~
【分類號】:O431.2
[Abstract]:The Wigner-Yanase bias information of trapped ions in standing wave field is studied and the recovery period is obtained. It is found that this period is the same as the recovery time of ion population inversion. The analytical solution and numerical simulation show that the recovery time of Wigner-Yanase skew information decreases with the increase of Lamb-Dicke parameters and increases with the increase of the average number of vibrational phonons. The recovery time of Wigner-Yanase bias information becomes longer when the ion centroid moves from the standing wave field to the wave belly. It is proved theoretically that the initial skewness information of the ion is always 1 / 2 when the trapped ion vibration is in the coherent state. The quantum entanglement between the ion and the standing wave laser field is analyzed.
【作者單位】: 江蘇科技大學應(yīng)用物理系;
【基金】:國家自然科學基金,11205071~~
【分類號】:O431.2
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