论文标题
在周围环境中纠缠的显着签名
Salient signatures of entanglement in the surrounding environment
论文作者
论文摘要
我们开发了一个模型，在该模型中，可以通过对系统周围环境的粗略观察来确认量子系统中的纠缠。当系统及其环境之间的相互作用与可观察到的纠缠证人成正比时，这种违反直觉的效果变得可能。在展示直觉的例子时，我们表明：i）理想气体的云，当受到线性潜力并与纠缠证人相结合时，朝着证人的迹象所决定的方向加速； ii）当环境是辐射场时，介电偏振的方向取决于纠缠的存在； iii）腔中电磁场的四倍，加上两个量子位（或四级原子）的腔体以相同的方式置换。
We develop a model in which presence of entanglement in a quantum system can be confirmed through coarse observations of the environment surrounding the system. This counter-intuitive effect becomes possible when interaction between the system and its environment is proportional to an observable being an entanglement witness. While presenting intuitive examples we show that: i) a cloud of an ideal gas, when subject to a linear potential coupled with the entanglement witness, accelerates in the direction dictated by the sign of the witness; ii) when the environment is a radiation field, the direction of dielectric polarization depends on the presence of entanglement; iii) quadratures of electromagnetic field in a cavity coupled with two qubits (or a four-level atom) are displaced in the same manner.
