arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.05726cond-mat.quant-gasphysics.atom-phquant-ph
收藏

束缚里德堡离子链中的长程多体相互作用和三体反封锁

Long-range multi-body interactions and three-body anti-blockade in a trapped Rydberg ion chain

Filippo Maria Gambetta, Chi Zhang, Markus Hennrich, Igor Lesanovsky, Weibin Li

摘要:

被俘获的里德伯离子代表了用于量子模拟和信息处理的灵活平台,其结合了对电子自由度和振动自由度的高度控制。将离子单独激发到高里德堡能级的可能性提供了一种系统,其中激发离子对之间的强且长距离的相互作用可以通过外部激光场进行设计和调谐。我们发现,里德伯对相互作用和集体运动模式之间的耦合产生有效的远程多体相互作用,包括两个,三个,和四体条款。它们的形状、强度和范围可以通过离子阱参数来控制,并且强烈依赖于离子晶体的平衡构型和振动模式。通过聚焦于实验上可行的准一维$ {}^{88}\mathrm{Sr}^+ $里德堡离子的设置,我们证明了多体相互作用通过出现软模式而增强,例如,具有结构相变。这对多体电子状态有着显著的影响,例如,在三体反封锁效应中。我们的研究表明,捕获的里德伯离子提供了新的机会,研究异国情调的多体量子动力学驱动的增强多体相互作用。

英文摘要:

Trapped Rydberg ions represent a flexible platform for quantum simulation and information processing which combines a high degree of control over electronic and vibrational degrees of freedom. The possibility to individually excite ions to high-lying Rydberg levels provides a system where strong and long-range interactions between pairs of excited ions can be engineered and tuned via external laser fields. We show that the coupling between Rydberg pair interactions and collective motional modes gives rise to effective long-range multi-body interactions, consisting of two, three, and four-body terms. Their shape, strength, and range can be controlled via the ion trap parameters and strongly depends on both the equilibrium configuration and vibrational modes of the ion crystal. By focusing on an experimentally feasible quasi one-dimensional setup of $ {}^{88}\mathrm{Sr}^+ $ Rydberg ions, we demonstrate that multi-body interactions are enhanced by the emergence of a soft mode associated, e.g., with a structural phase transition. This has a striking impact on many-body electronic states and results, for example, in a three-body anti-blockade effect. Our study shows that trapped Rydberg ions offer new opportunities to study exotic many-body quantum dynamics driven by enhanced multi-body interactions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑