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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 |
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 |
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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.
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Received: 14 July 2014
Revised: 21 October 2014
Accepted manuscript online:
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PACS:
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03.67.-a
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(Quantum information)
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42.50.Ex
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(Optical implementations of quantum information processing and transfer)
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42.65.-k
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(Nonlinear optics)
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03.67.Hk
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(Quantum communication)
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Fund: 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. |
Corresponding Authors:
Hyung-Jin Yang
E-mail: yangh@korea.ac.kr
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About author: 03.67.-a; 42.50.Ex; 42.65.-k; 03.67.Hk |
Cite this article:
Jino Heo, Chang-Ho Hong, Jong-In Lim, Hyung-Jin Yang Bidirectional quantum teleportation of unknown photons using path-polarization intra-particle hybrid entanglement and controlled-unitary gates via cross-Kerr nonlinearity 2015 Chin. Phys. B 24 050304
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