引力作用下两个laser脉冲纠缠的产生
Generation of entanglement between two laser pulses through gravitational interaction
摘要：
在线性化量子引力框架下研究了两个脉冲之间通过引力相互作用产生纠缠。与先前提出的两个大质量粒子可以通过粒子自身产生的引力场纠缠不同，我们使用无质量粒子（一个激光脉冲）来产生引力场。在我们的方案中，激光脉冲产生的引力扰动的传播延迟效应可以被纳入相互作用中，这对于支持局域相互作用假设是有意义的。结果表明，局域线性化的量子引力相互作用确实可以导致两个脉冲之间纠缠的产生，并且纠缠的结果依赖于引力微扰的传播时间.我们还提供了一个测量建议，使用全息干涉仪结构来呈现引力诱导纠缠的结果，这可能表明引力介质在未来的实验中是量子的。
英文摘要：
We investigate entanglement generation between two pulses through the gravitational interaction in the framework of linearized quantum gravity. Different from the earlier suggestions that two massive particles can be entangled through the gravitational field produced by the particles themselves, we use the massless particles (a laser pulse) to generate the gravitational field. In our proposal, the propagating retarded effect of the gravitational perturbation generated by the laser pulses can be incorporated into the interaction, which is significant for supporting the assumption of local interaction. It is found that the locally linearized quantum gravitational interaction can indeed lead to the generation of entanglement between two pulses, and the result is dependent on the propagating time of the gravitational perturbation. We also provide a measurement suggestion using a Holometer-like interferometers structure to present this result of gravitation-induced entanglement, which could show that the gravitational mediator is quantum in future experiments.
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