论文标题
量子重力模拟器的光子实现
Photonic Implementation of Quantum Gravity Simulator
论文作者
论文摘要
检测重力介导的纠缠可以提供证据表明重力场服从量子力学。我们报告了使用光子平台模拟该现象的结果。模拟测试了通过使用该变量介导纠缠的量子性质的想法，并产生理论和实验性见解。我们采用了三种方法来测试纠缠的存在：贝尔测试，纠缠证人和量子状态断层扫描。我们还模拟了通过重力崩溃模型预测的替代方案，或者是由于实验设置中的不完美，并使用量子状态断层扫描来证明没有纠缠。模拟的两个主要课程是：1）必须先对哪个 - 路径信息进行编码，然后从重力领域进行一致删除，2）执行铃铛测试导致更强的结论，证明存在重力介导的非局部性。
Detecting gravity mediated entanglement can provide evidence that the gravitational field obeys quantum mechanics. We report the result of a simulation of the phenomenon using a photonic platform. The simulation tests the idea of probing the quantum nature of a variable by using it to mediate entanglement, and yields theoretical and experimental insights. We employed three methods to test the presence of entanglement: Bell test, entanglement witness and quantum state tomography. We also simulate the alternative scenario predicted by gravitational collapse models or due to imperfections in the experimental setup and use quantum state tomography to certify the absence of entanglement. Two main lessons arise from the simulation: 1) which--path information must be first encoded and subsequently coherently erased from the gravitational field, 2) performing a Bell test leads to stronger conclusions, certifying the existence of gravity mediated nonlocality.
