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A Four-Dimensional Measurement Scheme for Single Photon Time-Polarization |
| REN Xi-Jun;ZHOU Zheng-Wei;SUN Fang-Wen;GUO Guang-Can |
| Key Laboratory of Quantum Information, University of Science nd Technology of China, Hefei 230026 |
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| Cite this article: |
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REN Xi-Jun, ZHOU Zheng-Wei, SUN Fang-Wen et al 2008 Chin. Phys. Lett. 25 12-15 |
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Abstract We propose an experimental scheme to realize the four-dimensional projective measurements for a single photon. The photon polarization and time--energy provide the four-dimensional Hilbert space. Based on this scheme, we suggest an experiment to test the violation of Bell inequalities of
four-dimensional systems. In addition, by virtue of a maximally entangled biphoton state, we also show that it is possible to construct a quantum key distribution channel that can provide two-bit key with one pair of entangled photons.
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| Keywords:
03.65.Ud
42.50.Xa
42.65.Lm
42.79.-e
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Received: 01 January 1900
Published: 27 December 2007
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| PACS: |
03.65.Ud
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(Entanglement and quantum nonlocality)
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42.50.Xa
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(Optical tests of quantum theory)
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42.65.Lm
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(Parametric down conversion and production of entangled photons)
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42.79.-e
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(Optical elements, devices, and systems)
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[9] Sun F W et al 2007 Phys. Rev. A 76 052303
[10] Ac\'{\in A et al 2002 Phys. Rev. A 65 052325 |
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