Abstract
We discuss the reversible storage of an entangled two-mode wavepacket in separated two atomic ensembles based on electromagnetically induced transparency. By introducing wavepacket dark-states, we show the dynamic transfer of quantum information of the wavepacket between the optical field and the atomic ensembles. We examine in detail the performance of the scheme focusing on the reversible storage of an entangled two-photon wavepacket in the case where the effects of the environment and the thermal motions of atoms are taken into consideration.





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Acknowledgements
This work is subsidized by National Natural Science Foundation of China, Project Nos. 11654003, 11174040 and 11604174, Fundamental Research Funds for the Central Universities (2017TZ01) and the Interdiscipline Research Funds of Beijing cooperative construction project.
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Wu, F., Qiu, T. & Yang, G. Reversible storage of entangled two-mode wavepacket based on electromagnetically induced transparency. Quantum Inf Process 17, 224 (2018). https://doi.org/10.1007/s11128-018-1992-9
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DOI: https://doi.org/10.1007/s11128-018-1992-9