Nonclassicality and information exchange in deterministic entanglement formation
arXiv:quant-ph/0205151 · doi:10.1016/j.physleta.2003.11.037
Abstract
We discuss the role of nonclassicality of quantum states as a necessary resource in deterministic generation of multipartite entangled states. In particular for three bilinearly coupled modes of the electromagnetic field, tuning of the coupling constants between the parties allows the total system to evolve into both Bell and GHZ states only when one of the parties is initially prepared in a nonclassical state. A superposition resource is then converted into an entanglement resource.
Replaced by the accepted version. Two optical implementations of the quantum resource conversion protocol are now proposed. To appear in Phys. Lett. A. 7 pages, 1 figure
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- Non-Gaussian two-mode squeezing and continuous variable entanglement of linearly and circularly polarized light beams interacting with cold atoms
- Entanglement versus mixedness for coupled qubits under a phase damping channel