论文标题
使用两种模式挤压状态和原子噪音放大器的量子中继器
Quantum Repeater using Two-Mode Squeezed States and Atomic Noiseless Amplifiers
论文作者
论文摘要
我们对如何使用无噪声放大和固态量子量的无噪声放大来存储和纯化两种模式挤压真空状态的理论研究。所提出的方法可用于概率地增加共享国家共享的双方之间的纠缠。提出的放大步骤在结构上与一组量子剪刀相似。但是，在这项工作中，放大步骤是通过从光学模式到一组固态量子位的状态转移来实现的，这些量子位充当量子存储器。我们探索了两种不同的应用程序，分别是纠缠的多数寄存器，以及用于长距离量子键分布的量子折扣器的构建。
We perform a theoretical investigation into how a two-mode squeezed vacuum state, that has undergone photon loss, can be stored and purified using noiseless amplification with a collection of solid-state qubits. The proposed method may be used to probabilistically increase the entanglement between the two parties sharing the state. The proposed amplification step is similar in structure to a set of quantum scissors. However, in this work the amplification step is realized by a state transfer from an optical mode to a set of solid-state qubits, which act as a quantum memory. We explore two different applications, the generation of entangled many-qubit registers, and the construction of quantum repeaters for long-distance quantum key distribution.
