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One-step deterministic multipartite entanglement purification with linear optics |
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| Authors: | Yu-Bo ShengGui Lu Long Fu-Guo Deng |
| Institution: | a Department of Physics, Tsinghua University, Beijing 100084, China b Center for Atomic and Molecular NanoSciences, Tsinghua University, Beijing 100084, China c Key Laboratory for Quantum Information and Measurements, Beijing 100084, China d Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875, China |
| Abstract: | We present a one-step deterministic multipartite entanglement purification scheme for an N-photon system in a Greenberger-Horne-Zeilinger state with linear optical elements. The parties in quantum communication can in principle obtain a maximally entangled state from each N-photon system with a success probability of 100%. That is, it does not consume the less-entangled photon systems largely, which is far different from other multipartite entanglement purification schemes. This feature maybe make this scheme more feasible in practical applications. |
| Keywords: | Quantum physics Deterministic entanglement purification Multipartite entanglement One-step Decoherence |
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