Dipartimento di Fisica, Università di Roma La Sapienza, Piazzale Aldo Moro 2, I-00185 Roma, Italy.
Phys Rev Lett. 2010 Feb 5;104(5):050403. doi: 10.1103/PhysRevLett.104.050403. Epub 2010 Feb 3.
We present the proposition of an experiment in which the multiphoton quantum superposition consisting of N approximately 10{5} particles generated by a quantum-injected optical parametric amplifier, seeded by a single-photon belonging to an Einstein-Podolsky-Rosen entangled pair, is made to interact with a mirror-Bose-Einstein condensate (BEC) shaped as a Bragg interference structure. The overall process will realize a macroscopic quantum superposition involving a microscopic single-photon state of polarization entangled with the coherent macroscopic transfer of momentum to the BEC structure, acting in spacelike separated distant places.
我们提出了一个实验的设想,即在由量子注入光参量放大器产生的由 N 约为 10{5}个粒子组成的多光子量子叠加态中,由属于爱因斯坦-波多尔斯基-罗森纠缠对的单个光子进行种子化,与镜玻色-爱因斯坦凝聚体(BEC)形成的布拉格干涉结构相互作用。整个过程将实现一个宏观量子叠加,其中包括一个微观的单光子偏振态与相干的宏观动量转移到 BEC 结构的纠缠,在时空间隔的遥远地方起作用。