arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv quant-ph/0406077quant-ph
收藏

关于Bell观测量的实现

On the realization of Bell observables

Giacomo Mauro D'Ariano, Paolo Perinotti

摘要:

我们展示了如何在一个二分量子系统的贝尔观测可以通过局部观测通过控制幺正变换。对于连续变量,该结果适用于对应于两个辐射模式的非常规外差测量的Bell观测值,其通过50-50分束器连接到由单模零差测量给出的两个局部观测值。提出了一种简单的连续变量受控幺正变换方案,该方案仅需两个压缩器、一个参量下变频器和两个分束器。

英文摘要:

We show how Bell observables on a bipartite quantum system can be obtained by local observables via a controlled-unitary transformation. For continuous variables this result holds for the Bell observable corresponding to the non-conventional heterodyne measurement on two radiation modes, which is connected through a 50-50 beam-splitter to two local observables given by single-mode homodyne measurements. A simple scheme for a controlled-unitary transformation of continuous variables is also presented, which needs only two squeezers, a parametric downconverter and two beam splitters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑