标题： 通过氮空位中心的纳米金刚石干涉测量测试量子引力 显示英文标题

标题： Testing quantum gravity by nanodiamond interferometry with nitrogen-vacancy centers

摘要： 以大质量粒子进行干涉测量可能有潜力探索标准量子力学的局限性，特别是在其与广义相对论的边界以及尚未发展的量子引力理论方面。 这一发展由于缺乏实验证据和可测试的预测而受到相当大的阻碍。 分析一些此类理论中似乎共有的效应，例如在标准量子力学框架内对能量色散和规范对易关系的修改，已被提出作为可能的前进方向。 在这里，我们详细分析了在Ramsey-Bordé设置中修改的能量动量色散的影响，并提供了在使用纳米钻石操作这种干涉仪时这些修正项的可实现界限。 因此，考虑到热和重力干扰将表明，在没有特定前提的情况下，量子引力的修改通常会被抑制，这需要重新审视之前估计的界限。 作为可能的解决方案，我们提出了一种对这些效应不太敏感的稳定设置。 最后，我们讨论了这种设置中的退相干和脉冲误差问题，并探讨了随着粒子质量增加的尺度和优势。 显示英文摘要

摘要： Interferometry with massive particles may have the potential to explore the limitations of standard quantum mechanics in particular where it concerns its boundary with general relativity and the yet to be developed theory of quantum gravity. This development is hindered considerably by the lack of experimental evidence and testable predictions. Analyzing effects that appear to be common to many of such theories, such as a modification of the energy dispersion and of the canonical commutation relation within the standard framework of quantum mechanics, has been proposed as a possible way forward. Here we analyze in some detail the impact of a modified energy-momentum dispersion in a Ramsey-Bord\'e setup and provide achievable bounds of these correcting terms when operating such an interferometer with nanodiamonds. Thus, taking thermal and gravitational disturbances into account will show that without specific prerequisites, quantum gravity modifications may in general be suppressed requiring a revision of previously estimated bounds. As a possible solution we propose a stable setup that is rather insensitive to these effects. Finally, we address the problems of decoherence and pulse errors in such setups and discuss the scalings and advantages with increasing particle mass.