Entanglement reciprocation between qubits and continuous variables

Details Entanglement reciprocation between qubits and continuous variables Entanglement reciprocation between qubits and continuous variables

2005-09-14

arxiv.org/abs/quant-ph/0509095v1

Phys. Rev. Lett. 96, 080501 (2006)

Physics

Quantum Physics

4 pages, 3 figures, RevTeX4

Scientific paper

10.1103/PhysRevLett.96.080501

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 pure separable Gaussian field with high excitation. We show that it is possible, though not straightforward, to retrieve the entanglement back to qubits from the entangled CV systems. The possibility of deposition of multiple ebits from qubits to the initially unentangled CV systems is also pointed out.

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