中国物理B ›› 2015, Vol. 24 ›› Issue (5): 50304-050304.doi: 10.1088/1674-1056/24/5/050304

• GENERAL • 上一篇    下一篇

Bidirectional quantum teleportation of unknown photons using path-polarization intra-particle hybrid entanglement and controlled-unitary gates via cross-Kerr nonlinearity

Jino Heoa b, Chang-Ho Honga b, Jong-In Lima b, Hyung-Jin Yanga c   

  1. a Graduate School of Information Security (GSIS), Korea University, Anam 5-ga Sungbuk-gu, Seoul, Republic of Korea;
    b Center for Information Security Technologies (CIST), Korea University, Seoul, Republic of Korea;
    c Department of Physics, Korea University, Sejong 339-700, Republic of Korea
  • 收稿日期:2014-07-14 修回日期:2014-10-21 出版日期:2015-05-05 发布日期:2015-05-05
  • 基金资助:
    Project supported by the Ministry of Science, ICT&Future Planning, Korea, under the C-ITRC (Convergence Information Technology Research Center) Support program (NIPA-2013-H0301-13-3007) supervised by the National IT Industry Promotion Agency.

Bidirectional quantum teleportation of unknown photons using path-polarization intra-particle hybrid entanglement and controlled-unitary gates via cross-Kerr nonlinearity

Jino Heoa b, Chang-Ho Honga b, Jong-In Lima b, Hyung-Jin Yanga c   

  1. a Graduate School of Information Security (GSIS), Korea University, Anam 5-ga Sungbuk-gu, Seoul, Republic of Korea;
    b Center for Information Security Technologies (CIST), Korea University, Seoul, Republic of Korea;
    c Department of Physics, Korea University, Sejong 339-700, Republic of Korea
  • Received:2014-07-14 Revised:2014-10-21 Online:2015-05-05 Published:2015-05-05
  • Contact: Hyung-Jin Yang E-mail:yangh@korea.ac.kr
  • About author:03.67.-a; 42.50.Ex; 42.65.-k; 03.67.Hk
  • Supported by:
    Project supported by the Ministry of Science, ICT&Future Planning, Korea, under the C-ITRC (Convergence Information Technology Research Center) Support program (NIPA-2013-H0301-13-3007) supervised by the National IT Industry Promotion Agency.

摘要: We propose an arbitrary controlled-unitary (CU) gate and a bidirectional quantum teleportation (BQTP) scheme. The proposed CU gate utilizes photonic qubits (photons) with cross-Kerr nonlinearities (XKNLs), X-homodyne detectors, and linear optical elements, and consists of the consecutive operation of a controlled-path (C-path) gate and a gathering-path (G-path) gate. It is almost deterministic and feasible with current technology when a strong coherent state and weak XKNLs are employed. Based on the CU gate, we present a BQTP scheme that simultaneously teleports two unknown photons between distant users by transmitting only one photon in a path-polarization intra-particle hybrid entangled state. Consequently, it is possible to experimentally implement BQTP with a certain success probability using the proposed CU gate.

关键词: cross-Kerr nonlinearity, bidirectional quantum teleportation, intra-particle hybrid entanglement

Abstract: We propose an arbitrary controlled-unitary (CU) gate and a bidirectional quantum teleportation (BQTP) scheme. The proposed CU gate utilizes photonic qubits (photons) with cross-Kerr nonlinearities (XKNLs), X-homodyne detectors, and linear optical elements, and consists of the consecutive operation of a controlled-path (C-path) gate and a gathering-path (G-path) gate. It is almost deterministic and feasible with current technology when a strong coherent state and weak XKNLs are employed. Based on the CU gate, we present a BQTP scheme that simultaneously teleports two unknown photons between distant users by transmitting only one photon in a path-polarization intra-particle hybrid entangled state. Consequently, it is possible to experimentally implement BQTP with a certain success probability using the proposed CU gate.

Key words: cross-Kerr nonlinearity, bidirectional quantum teleportation, intra-particle hybrid entanglement

中图分类号:  (Quantum information)

  • 03.67.-a
42.50.Ex (Optical implementations of quantum information processing and transfer) 42.65.-k (Nonlinear optics) 03.67.Hk (Quantum communication)