Linear optics-based entanglement concentration protocols for cluster-type entangled coherent state

被引：0
作者：
Mitali Sisodia
Chitra Shukla
Gui-Lu Long
机构：
[1] Jaypee Institute of Information Technology,State Key Laboratory of Low
[2] Tsinghua University,Dimensional Quantum Physics and Department of Physics
[3] Peng Cheng Laboratory,Center for Quantum Computing
来源：
Quantum Information Processing | 2019年 / 18卷
关键词：
Entanglement concentration; Coherent state; Maximally entangled state;
D O I：
暂无
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学科分类号：
摘要：
We proposed two linear optics-based entanglement concentration protocols (ECPs) to obtain maximally entangled 4-mode cluster-type entangled coherent state (ECS) from less (partially) entangled cluster-type ECS. The first ECP is designed using a superposition of single-mode coherent state with two unknown parameters, whereas the second ECP is obtained using a superposition of single-mode coherent state and a superposition of two-mode coherent state with four unknown parameters. The success probabilities have been calculated for both the ECPs. The necessary quantum circuits enabling future experimental realizations of the proposed ECPs are provided using linear optical elements. Further, the benefit of the proposed schemes is established in the context of long-distance quantum communication where photon loss is an obstruction.
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