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Efficient preparation of a four-photon cluster state with homodyne measurement via cross-Kerr nonlinearity |
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| Authors: | ZHAO ChunRan & YE Liu School of Physics & Materials Science Anhui University Hefei China School of Physics & Electronic Information Huaibei Normal University Huaibei |
| Institution: | ZHAO ChunRan1,2 & YE Liu1 1 School of Physics & Materials Science,Anhui University,Hefei 230039,China,2 School of Physics & Electronic Information,Huaibei Normal University,Huaibei 235000 |
| Abstract: | A scheme is proposed for generating a multiphoton entangled cluster state among four modes. The scheme only uses Kerr medium, beam splitter and homodyne measurements on coherent light fields, which can be efficiently made in quantum optical laboratories. The photon in the signal mode is prepared in a superposition state of the vacuum state and one-photon state while the probe beam is initially set in a coherent state superposition. The strong probe mode interacts successively with multiple signal-mode photo... |
| Keywords: | cluster state cross-Kerr nonlinearity homodyne measurement entanglement |
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