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Nearly Deterministic Teleportation of a Photonic Qubit with Weak Cross-Kerr Nonlinearities |
| ZHOU Jian1,2, YANG Ming1, LU Yan1, CAO Zhuo-Liang 3,1 |
| 1Key Laboratory of Opto-electronic Information Acquisition and Manipulation (Ministry of Education), School of Physics and Material Science, Anhui University, Hefei 2300392Anhui Xinhua University, Hefei 2300883Department of Physics and Electronic Engineering, Hefei Teachers College, Hefei 230061 |
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| Cite this article: |
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ZHOU Jian, YANG Ming, LU Yan et al 2009 Chin. Phys. Lett. 26 100301 |
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Abstract Scheme for teleporting an unknown single-qubit photonic state is revisited. With the help of quantum nondemolition measurements, the scheme now can be achieved in an almost deterministic way. The weak-cross-Kerr-nonlinearities-based quantum nondemolition measurement acts as an entangler as well as the Bell-state analyzer, and thus plays a similar role as the CNOT gate in the teleportation process. This improvement makes the present scheme more efficient than the schemes using nonunitary projective measurements and feasible with the current experimental technology.
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| Keywords:
03.67.Hk
03.67.Mn
03.67.Pp
42.50.Dv
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Received: 23 March 2009
Published: 27 September 2009
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| PACS: |
03.67.Hk
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(Quantum communication)
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03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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03.67.Pp
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(Quantum error correction and other methods for protection against decoherence)
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42.50.Dv
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(Quantum state engineering and measurements)
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