Photonic resource state generation from a minimal number of quantum emitters
Photonic resource state generation from a minimal number of quantum emitters
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DOI：
10.1038/s41534-022-00522-6
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发表时间：
2021-08
影响因子：
7.6
通讯作者：
Bikun Li;S. Economou;Edwin Barnes
中科院分区：
文献类型：
--
作者：
Bikun Li;S. Economou;Edwin Barnes
多光子纠缠图态是量子通信网络、分布式量子计算和传感的基础资源。原则上，这些状态可以由量子发射体（如光学活性量子点或缺陷、原子系统或超导量子比特）确定地产生。然而，寻找产生这种状态的有效方案一直是一个长期的挑战。在这里，我们提出了一个算法，给定一个理想的多光子图状态，确定量子发射器的最小数量和精确的操作序列，可以产生它。算法本身和由此产生的操作序列在光子图状态的大小上都是多项式的，允许人们获得有效的方案来生成包含数百或数千个光子的图状态。
Multi-photon entangled graph states are a fundamental resource in quantum communication networks, distributed quantum computing, and sensing. These states can in principle be created deterministically from quantum emitters such as optically active quantum dots or defects, atomic systems, or superconducting qubits. However, finding efficient schemes to produce such states has been a long-standing challenge. Here, we present an algorithm that, given a desired multi-photon graph state, determines the minimum number of quantum emitters and precise operation sequences that can produce it. The algorithm itself and the resulting operation sequence both scale polynomially in the size of the photonic graph state, allowing one to obtain efficient schemes to generate graph states containing hundreds or thousands of photons.