Using an Atom Interferometer to Infer Gravitational Entanglement Generation
Using an Atom Interferometer to Infer Gravitational Entanglement Generation
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DOI：
10.1103/prxquantum.2.030330
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发表时间：
2021-08-18
期刊：
影响因子：
9.7
通讯作者：
Taylor, Jacob M.
中科院分区：
文献类型：
--
作者：
Carney, Daniel;Muller, Holger;Taylor, Jacob M.
如果引力扰动被量子化为引力子，就像电磁场和光子一样，那么由此产生的引力子相互作用应该导致大质量物体之间的纠缠相互作用。我们建议对这一预测进行检验。为此，我们引入了交互式量子信息传感的概念。这种新的传感协议是专为可证明的验证弱动力学纠缠产生对系统之间。我们表明，该协议是非常强大的典型的热噪声源。此外，可以通过使用初始热状态和/或经由非引力相互作用的纠缠的初始阶段来增加灵敏度。我们概述了一个具体的实施测试的能力，引力场产生纠缠之间的原子干涉仪和机械振荡器。初步的数值估计表明，近期的设备可以可行地用于执行实验。
If gravitational perturbations are quantized into gravitons in analogy with the electromagnetic field and photons, the resulting graviton interactions should lead to an entangling interaction between massive objects. We suggest a test of this prediction. To do this, we introduce the concept of interactive quantum information sensing. This novel sensing protocol is tailored to provable verification of weak dynamical entanglement generation between a pair of systems. We show that this protocol is highly robust to typical thermal noise sources. Moreover, the sensitivity can be increased both using an initial thermal state and/or an initial phase of entangling via a nongravitational interaction. We outline a concrete implementation testing the ability of the gravitational field to generate entanglement between an atomic interferometer and a mechanical oscillator. Preliminary numerical estimates suggest that near-term devices could feasibly be used to perform the experiment.