论文标题
重力诱导的纠缠的扩增
Amplification of Gravitationally Induced Entanglement
论文作者
论文摘要
观察重力诱导的两个巨大颗粒之间的纠缠被视为意味着重力的非经典性质的存在。但是，重力场中的弱相互作用非常小，因此在实践中，重力诱导的纠缠非常具有挑战性。为了应对这一关键挑战，我们在这里提出了一个基于弱纠缠的逻辑矛盾的标准，这可能会提高由于重力引起的纠缠而引起的信号的敏感性。具体而言，我们利用弱值场景和爱因斯坦 - 波多尔斯基 - 罗森转向。我们证明，经典的调解人不可能在两个局部量子对象上作用以模拟两设定的爱因斯坦 - 波多尔斯基 - 罗森 - 罗森 - 罗森转向的放大效果现象。我们的方法可以扩增重力诱导的纠缠信号，这些信号以前无法通过任何所需的因素观察，这些因素取决于弱值的大小。我们的结果不仅开辟了在不久的将来探索重力的非经典性质的可能性，而且还为较弱的纠缠标准铺平了道路。
Observation of gravitationally induced entanglement between two massive particles can be viewed as implying the existence of the nonclassical nature of gravity. However, weak interaction in the gravitational field is extremely small so that gravitationally induced entanglement is exceptionally challenging to test in practice. For addressing this key challenge, here we propose a criterion based on the logical contradictions of weak entanglement, which may boost the sensitivity of the signal due to the gravitationally induced entanglement. Specifically, we make use of the weak-value scenario and Einstein-Podolsky-Rosen steering. We prove that it is impossible for a classical mediator to act on two local quantum objects to simulate amplified-weak-value phenomenon in two-setting Einstein-Podolsky-Rosen steering. Our approach can amplify the signal of gravitationally induced entanglement that were previously impossible to observe by any desired factor that depends on the magnitude of the weak value. Our results not only open up the possibility of exploring nonclassical nature of gravity in the near future, but they also pave the way for weak entanglement criterion of a more general nature.
