Phys. Rev. Lett. 96, 080501 (2006) [4 pages]Entanglement Reciprocation between Qubits and Continuous VariablesReceived 20 September 2005; published 28 February 2006 We investigate how entanglement can be transferred between qubits and continuous-variable (CV) systems. We find that one ebit borne in maximally entangled qubits can be fully transferred to two CV systems which are initially prepared in a pure separable Gaussian field with high excitation. We show that it is possible to retrieve the entanglement back to qubits from the entangled CV systems. The deposition of multiple ebits from qubits to the initially separable CV systems is also pointed out. We show that the entanglement transfer and retrieval are done at a quasisteady state. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.080501
DOI:
10.1103/PhysRevLett.96.080501
PACS:
03.67.Mn, 03.67.Hk, 42.50.Ct
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