论文标题
通过固态自旋量子记忆的超导Qubit的远程纠缠
Remote Entanglement of Superconducting Qubits via Solid-State Spin Quantum Memories
论文作者
论文摘要
对远程超导系统之间的量子通信进行了深入研究，以增加集成超导量子的数量并实现分布式量子计算机。由于必须将光学光子用于稀释冰箱之外的通信，因此已经广泛研究了微波光子到光学光子的直接转换。但是，直接转化方法受到增加的光子噪声，由于强烈的光泵而加热以及对大型合作的要求。取而代之的是，对于超导Qubits之间的量子通信，我们建议使用固态自旋量子存储器的纠缠分布方案，该记忆可作为微波和光光子的接口。与使用高功率光泵的方案相比，量子存储器可实现量子通信，而无需在冰箱内部进行大量加热。此外，自然引入量子记忆使您可以使用多个记忆力来预言纠缠和并行化。
Quantum communication between remote superconducting systems is being studied intensively to increase the number of integrated superconducting qubits and to realize a distributed quantum computer. Since optical photons must be used for communication outside a dilution refrigerator, the direct conversion of microwave photons to optical photons has been widely investigated. However, the direct conversion approach suffers from added photon noise, heating due to a strong optical pump, and the requirement for large cooperativity. Instead, for quantum communication between superconducting qubits, we propose an entanglement distribution scheme using a solid-state spin quantum memory that works as an interface for both microwave and optical photons. The quantum memory enables quantum communication without significant heating inside the refrigerator, in contrast to schemes using high-power optical pumps. Moreover, introducing the quantum memory naturally makes it possible to herald entanglement and parallelization using multiple memories.
