论文标题
纳米晶体物质波干涉仪的相对加速降低噪声：应用量子重力纠缠质量
Relative Acceleration Noise Mitigation for Nanocrystal Matter-wave Interferometry: Application to Entangling Masses via Quantum Gravity
论文作者
论文摘要
由于干涉质量质量和相关设备之间的相对加速度，因此具有大动量转移的物质干涉仪将面临普遍的脱位。在这里，我们提出了一个解决方案，即使不积极跟踪相对加速度也可以使用：将干扰质量及其相关的设备同时放在自由下降的胶囊中，以使最强的惯性噪声成分由于等价原理而消失。在这种情况下，我们研究了两个最重要的剩余噪声源：（a）实验设置的非惯用抖动和（b）重力梯度噪声。我们表明，可以通过适当的压力和温度将前者降低到所需的值以下，而后者可以在受控的环境中充分缓解。我们最终将分析应用于测试重力量子性质的最新建议[S. Bose等。 al。物理。 Rev. Lett 119，240401（2017）]通过两个正在进行干扰法的群众的纠缠。我们表明，与可达到的相对加速度噪声相关的相关纠缠见证是可行的。
Matter wave interferometers with large momentum transfers, irrespective of specific implementations, will face a universal dephasing due to relative accelerations between the interferometric mass and the associated apparatus. Here we propose a solution that works even without actively tracking the relative accelerations: putting both the interfering mass and its associated apparatus in a freely falling capsule, so that the strongest inertial noise components vanish due to the equivalence principle. In this setting, we investigate two of the most important remaining noise sources: (a) the non-inertial jitter of the experimental setup and (b) the gravity-gradient noise. We show that the former can be reduced below desired values by appropriate pressures and temperatures, while the latter can be fully mitigated in a controlled environment. We finally apply the analysis to a recent proposal for testing the quantum nature of gravity [S. Bose et. al. Phys. Rev. Lett 119, 240401 (2017)] through the entanglement of two masses undergoing interferometry. We show that the relevant entanglement witnessing is feasible with achievable levels of relative acceleration noise.
