Phonon Pair Creation by Inflating Quantum Fluctuations in an Ion Trap
Phonon Pair Creation by Inflating Quantum Fluctuations in an Ion Trap
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DOI：
10.1103/physrevlett.123.180502
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发表时间：
2019-10-29
影响因子：
8.6
通讯作者：
Schaetz, Tobias
中科院分区：
文献类型：
--
作者：
Wittemer, Matthias;Hakelberg, Frederick;Schaetz, Tobias
量子理论预言了在外部条件急剧变化时的有趣的动力学。我们足够快地切换两个离子的捕获场，以撕裂量子波动，即，产生成对的声子，从而挤压离子的运动状态。这个过程可以被解释为宇宙学粒子创造的实验模拟，并伴随着空间纠缠的形成。因此，我们的平台允许人们研究压缩，对创造和纠缠的因果关系，并可能允许人们在宇宙学概念和量子信息处理应用之间交叉施肥。
Quantum theory predicts intriguing dynamics during drastic changes of external conditions. We switch the trapping field of two ions sufficiently fast to tear apart quantum fluctuations, i.e., create pairs of phonons and, thereby, squeeze the ions' motional state. This process can be interpreted as an experimental analog to cosmological particle creation and is accompanied by the formation of spatial entanglement. Hence, our platform allows one to study the causal connections of squeezing, pair creation, and entanglement and might permit one to cross-fertilize between concepts in cosmology and applications of quantum information processing.