The European Physical Journal D

, Volume 47, Issue 1, pp 127–131 | Cite as

Entanglement reciprocation using three level atoms in a lambda configuration

  • F. C. Lourenço
  • A. Vidiella-BarrancoEmail author
Quantum Optics and Quantum Information


We propose a scheme in which entanglement can be transferred from atoms (discrete variables) to entangled states of cavity fields (continuous variables). The cavities play the role of a kind of quantum memory for entanglement, in such a way that it is possible to retrieve it back to the atoms. In our method, two three level atoms in a lambda configuration, previously entangled, are set to interact with single mode cavity fields prepared in coherent states. During the process, one e-bit of entanglement may be deposited in the cavities in an efficient way. We also show that the stored entanglement may be transferred back to flying atoms.


42.50.-p Quantum optics 42.50.Dv Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements 03.67.Mn Entanglement production, characterization, and manipulation 


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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  1. 1.Instituto de Física “Gleb Wataghin”, Universidade Estadual de CampinasCampinas São PauloBrazil

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