Acta Optica Sinica, Volume. 41, Issue 16, 1627002(2021)

EPR Quantum Steering Switch Based on Entanglement Swapping

Shuqin Zhai1,2、*, Nan Yuan1, and Kui Liu2
Author Affiliations
  • 1College of Physics and Electronic Engineering, Shanxi University, Taiyuan, Shanxi 0 30006, China
  • 2State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan, Shanxi 0 30006, China
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    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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    Shuqin Zhai, Nan Yuan, Kui Liu. EPR Quantum Steering Switch Based on Entanglement Swapping[J]. Acta Optica Sinica, 2021, 41(16): 1627002

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    Paper Information

    Category: Quantum Optics

    Received: Dec. 15, 2020

    Accepted: Mar. 18, 2021

    Published Online: Aug. 12, 2021

    The Author Email: Zhai Shuqin (xiaozhai@sxu.edu.cn)

    DOI:10.3788/AOS202141.1627002

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