EPR Quantum Steering Switch Based on Entanglement Swapping

被引：2
作者：
Zhai Shuqin [1 ,2 ]
Yuan Nan [1 ]
Liu Kui [2 ]
机构：
[1] Shanxi Univ, Coll Phys & Elect Engn, Taiyuan 030006, Shanxi, Peoples R China
[2] Shanxi Univ, State Key Lab Quantum Opt & Quantum Opt Devices, Inst Optoelect, Taiyuan 030006, Shanxi, Peoples R China
来源：
ACTA OPTICA SINICA | 2021年 / 41卷 / 16期
关键词：
quantum optics; EPR steering; quantum switch; asymmetry; entanglement swapping; quantum communications;
D O I：
10.3788/AOS202141.1627002
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The information manipulation relevance among different users has profound significance in secure quantum communication. EPR steering, which means that one party can steer the state of a distant party by exploiting shared entanglement, is an important resource in a secure quantum network. In this work, we present a quantum switch scheme based on entanglement swapping, in which a tunable beam splitter is set as a control switch during the swapping of two space-separated EPR entangled states. The dependence of the EPR steering direction on the reflectivity of tunable beam splitter is observed, and the control of steering direction among different users is investigated. The proposed scheme has reference value for secure quantum communication.
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页数：7
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