论文标题
量子信息掩盖的光子实现
Photonic implementation of quantum information masking
论文作者
论文摘要
量子信息的掩盖将其传播到非局部相关性上，并将其隐藏在子系统中。众所周知，没有任何操作可以同时掩盖所有纯状态[物理。莱特牧师。 120，230501（2018）]，那么量子信息掩盖有用吗？在这里，我们将量子信息掩盖的定义扩展到一般混合状态，并表明可掩盖的量子状态的资源远比无需定理所暗示的要丰富得多。从几何上讲，同时可掩盖的状态置于州超球州的超泄漏处，并严格包含可广播状态。我们使用时间相关的光子来设计一个光子量子信息掩蔽机，以实验研究量子掩蔽的特性，并演示量子信息转移到两分属相关性及其忠实检索中。多功能掩蔽机具有不错的可扩展性，并且可能适用于量子秘密共享和容忍故障的量子通信。我们的结果为量子信息掩盖的理解和潜在应用提供了一些见解。
Masking of quantum information spreads it over nonlocal correlations and hides it from the subsystems. It is known that no operation can simultaneously mask all pure states [Phys. Rev. Lett. 120, 230501 (2018)], so in what sense is quantum information masking useful? Here, we extend the definition of quantum information masking to general mixed states, and show that the resource of maskable quantum states are far more abundant than the no-go theorem seemingly suggests. Geometrically, the simultaneously maskable states lays on hyperdisks in the state hypersphere, and strictly contain the broadcastable states. We devise a photonic quantum information masking machine using time-correlated photons to experimentally investigate the properties of qubit masking, and demonstrate the transfer of quantum information into bipartite correlations and its faithful retrieval. The versatile masking machine has decent extensibility, and may be applicable to quantum secret sharing and fault-tolerant quantum communication. Our results provide some insights on the comprehension and potential application of quantum information masking.
