中国物理B ›› 2025, Vol. 34 ›› Issue (1): 10303-010303.doi: 10.1088/1674-1056/ad8fa0

• • 上一篇    

Established conversions for hybrid entangled states assisted by error-predicted parity-discriminated devices

Fang-Fang Du(杜芳芳)†, Zhi-Guo Fan(范志国), Xue-Mei Ren(任雪梅), Ming Ma(马明), and Wen-Yao Liu(刘文耀)‡   

  1. Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan 030051, China
  • 收稿日期:2024-09-01 修回日期:2024-10-27 接受日期:2024-11-07 发布日期:2024-12-06
  • 通讯作者: Fang-Fang Du, Wen-Yao Liu E-mail:Duff@nuc.edu.cn;liuwenyao@nuc.edu.cn
  • 基金资助:
    This work was supported by the National Key R&D Program of China (Grant No. 2022YFB3203400), the National Natural Science Foundation of China (Grant No. 61901420), and Fundamental Research Program of Shanxi Province (Grant No. 20230302121116).

Established conversions for hybrid entangled states assisted by error-predicted parity-discriminated devices

Fang-Fang Du(杜芳芳)†, Zhi-Guo Fan(范志国), Xue-Mei Ren(任雪梅), Ming Ma(马明), and Wen-Yao Liu(刘文耀)‡   

  1. Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan 030051, China
  • Received:2024-09-01 Revised:2024-10-27 Accepted:2024-11-07 Published:2024-12-06
  • Contact: Fang-Fang Du, Wen-Yao Liu E-mail:Duff@nuc.edu.cn;liuwenyao@nuc.edu.cn
  • Supported by:
    This work was supported by the National Key R&D Program of China (Grant No. 2022YFB3203400), the National Natural Science Foundation of China (Grant No. 61901420), and Fundamental Research Program of Shanxi Province (Grant No. 20230302121116).

摘要: Hybrid entangled states are crucial in quantum physics, offering significant benefits for hybrid quantum communication and quantum computation, and then the conversion of hybrid entangled states is equally critical. This paper presents two novel schemes, that is, one converts the two-qubit hybrid Knill-Laflamme-Milburn (KLM) entangled state into Bell states and the other one transforms the three-qubit hybrid KLM state into Greenberger-Horne-Zeilinger (GHZ) states assisted by error-predicted and parity-discriminated devices. Importantly, the integration of single photon detectors into the parity-discriminated device enhances predictive capabilities, mitigates potential failures, and facilitates seamless interaction between the nitrogen-vacancy center and photons, so the two protocols operate in an error-predicted way, improving the experimental feasibility. Additionally, our schemes demonstrate robust fidelities (close to 1) and efficiencies, indicating their feasibility with existing technology.

关键词: quantum information processing, quantum entanglement, quantum communication, entanglement conversion

Abstract: Hybrid entangled states are crucial in quantum physics, offering significant benefits for hybrid quantum communication and quantum computation, and then the conversion of hybrid entangled states is equally critical. This paper presents two novel schemes, that is, one converts the two-qubit hybrid Knill-Laflamme-Milburn (KLM) entangled state into Bell states and the other one transforms the three-qubit hybrid KLM state into Greenberger-Horne-Zeilinger (GHZ) states assisted by error-predicted and parity-discriminated devices. Importantly, the integration of single photon detectors into the parity-discriminated device enhances predictive capabilities, mitigates potential failures, and facilitates seamless interaction between the nitrogen-vacancy center and photons, so the two protocols operate in an error-predicted way, improving the experimental feasibility. Additionally, our schemes demonstrate robust fidelities (close to 1) and efficiencies, indicating their feasibility with existing technology.

Key words: quantum information processing, quantum entanglement, quantum communication, entanglement conversion

中图分类号:  (Quantum information)

  • 03.67.-a
03.67.Hk (Quantum communication) 03.67.Dd (Quantum cryptography and communication security) 03.65.Ud (Entanglement and quantum nonlocality)