Quantum electromechanics with levitated nanoparticles
Quantum electromechanics with levitated nanoparticles
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DOI：
10.1038/s41534-020-00333-7
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发表时间：
2020-05
影响因子：
7.6
通讯作者：
Lukas Martinetz;K. Hornberger;J. Millen;M. Kim;B. Stickler
中科院分区：
文献类型：
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作者：
Lukas Martinetz;K. Hornberger;J. Millen;M. Kim;B. Stickler
制备和观察纳米粒子的量子态是一项具有挑战性的任务，与量子技术和基础物理测试具有很大的相关性。与具有离散跃迁的原子系统相比，纳米粒子表现出实际上连续的吸收光谱，因此它们的量子动力学不容易被操纵。在这里，我们证明了带电的纳米级介电体可以通过超导量子比特相干地连接其旋转和平动，人为地赋予其离散能级结构。我们提出了一种脉冲方案，用于几个悬浮纳米粒子之间的运动量子叠加和纠缠的产生和读出，为网络化混合量子器件提供了一个全电平台。
Preparing and observing quantum states of nanoscale particles is a challenging task with great relevance for quantum technologies and tests of fundamental physics. In contrast to atomic systems with discrete transitions, nanoparticles exhibit a practically continuous absorption spectrum and thus their quantum dynamics cannot be easily manipulated. Here, we demonstrate that charged nanoscale dielectrics can be artificially endowed with a discrete level structure by coherently interfacing their rotational and translational motion with a superconducting qubit. We propose a pulsed scheme for the generation and read-out of motional quantum superpositions and entanglement between several levitated nanoparticles, providing an all-electric platform for networked hybrid quantum devices.