Efficient W polarization state distribution over an arbitrary collective-noise channel with cross-Kerr nonlinearity |
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| Authors: | Pei-Min Lu Jie Song |
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| Institution: | a Department of Physics, Fuzhou University, Fuzhou 350002, Chinab School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, Chinac Department of Physics, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | We propose an efficient protocol for W polarization entangled state distribution over an arbitrary collective-noise channel with the help of the cross-Kerr nonlinearity. The entangled state in the frequency degree of freedom, which suffers little from the noise in an optical fiber, is used in the present protocol. The frequency entanglement can be transferred into polarization entanglement with the success probability of 100%. So, the three parities can share the maximally W polarization state with local operations and polarization independent wavelength division multiplexers which can erase distinguishability for frequency. |
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| Keywords: | Quantum entanglement distribution Cross-Kerr nonlinearity W polarization entangled state |
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