论文标题
多光子光的对称性保护
Symmetry-protection of multiphoton states of light
论文作者
论文摘要
在本手稿中，我们分析了圆柱形对称性散射问题中受保护的多光子状态的出现。为了做到这一点，我们首先提供了对邮政对称保护的概念的正式定义。我们表明，对称性保护状态不仅限于一个或两光子状态，相反，它可以正式扩展到多光子案例。此外，我们证明了圆柱形对称性的情况，所有可能的多光子受保护状态都是由一小部分和两光子状态构建的。最后，我们指出了对称性保护状态在量子通信中可能具有的可能应用，具体来说，在构建无腐烂子空间中。
In this manuscript we analyze the emergence of protected multiphoton states in scattering problems with cylindrical symmetry. In order to do that, we first provide a formal definition of the concept of postselected symmetry-protection. We show that symmetry-protected states are not limited to one- or two-photon states, on the contrary, it can be formally extended to the multiphoton case. In addition, we prove for the case of cylindrical symmetry that all possible multiphoton protected states are constructed from a small set of one- and two-photon states. Finally, we point out possible applications that symmetry-protected states may have in quantum communications, concretely, in the construction of decoherence-free subspaces.
