Teleportation between distant qudits via scattering of mobile qubits
Teleportation between distant qudits via scattering of mobile qubits
复制标题
通过移动量子位的散射在遥远的量子位之间进行隐形传输
DOI：
10.1103/physreva.81.042318
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发表时间：
2010
影响因子：
2.9
通讯作者：
Ciccarello F
中科院分区：
文献类型：
--
作者：
Ciccarello F
我们考虑一个一维结构，其中非相互作用的自旋散射中心，如量子杂质或多级原子，嵌入在给定的位置。我们发现，注入到结构的非偏振飞行量子比特，如电子或光子，沿着与路径检测足以完成两个中心之间的自旋态隐形传态通过第三辅助之一。不需要对自旋粒子和飞行量子比特的内部量子态采取任何行动。该协议通过利用非常低的控制机制，即散射，使纳米结构中分离良好的静态实体之间的量子信息传输成为可能。
We consider a one-dimensional structure where noninteracting spin-scattering centers, such as quantum impurities or multilevel atoms, are embedded at given positions. We show that the injection into the structure of unpolarized flying qubits, such as electrons or photons, along with path detection suffice to accomplish spin-state teleportation between two centers via a third ancillary one. No action over the internal quantum state of both the spin-particles and the flying qubits is required. The protocol enables the transfer of quantum information between well-separated static entities in nanostructures by exploiting a very low control mechanism, namely scattering.