Quantum superdense coding based on hyperentanglement |
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Authors: | Zhao Rui-Tong Guo Qi Chen Li Wang Hong-Fu Zhang Shou |
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Institution: | a Department of Physics, College of Science, Yanbian University, Yanji 133002, China;b Center for Condensed Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China |
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Abstract: | We present a scheme for quantum superdense coding with hyperentanglement, in which the sender can transfer four bits of classical information by sending only one photon. The important device in the scheme is hyperentangled Bell-state analyzer in both of polarization and frequency degrees of freedom, which is also constructed in the paper by using quantum nondemolition detector assisted by cross-Kerr nonlinearity. Our scheme can transfer more information with less resources than the existing schemes and is nearly deterministic and nondestructive. |
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Keywords: | quantum superdense coding hyperentangled state Bell-state analysis |
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