Teleportation of a cat-state via attenuated quantum channel using only threshold detectors |
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Authors: | Nguyen Ba An Ho Ngoc Phien |
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Institution: | a Institute of Physics and Electronics, 10 Dao Tan, Thu Le, Ba Dinh, Hanoi, Viet Nam b School of Computational Sciences, Korea Institute for Advanced Study, 207-43 Cheongryangni 2-dong, Dongdaemun-gu, Seoul 130-722, Republic of Korea c Physics Department, University of Sciences, 77 Nguyen Hue, Hue, Viet Nam |
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Abstract: | An experimental scheme is proposed for faithful teleportation of a unknown optical cat-state via attenuated quantum channel due to energy loss or photon absorption during the process of entanglement sharing. The scheme is probabilistic, yet conclusive, and the effective classical communication costs just Log23 bits, instead of five bits which are necessary for full record of the measurement outcome. The scheme uses only threshold (i.e., yes/no) detectors so that exact photon counting is not needed. However, it requires application of a nonlinear element called cross-phase modulator. Feasibility of the scheme is also discussed with respect to EIT-based modern techniques. |
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Keywords: | 03 67 -a 03 67 Hk |
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