Greenberger-Horne-Zeilinger Entanglement of Six Separated Resonators via Concurrent Parametric Down-Conversion

We present an alternative scheme for generating six-partite continuous variable Greenberger-Horne-Zeilinger entanglement of the separated resonators that are interconnected by two driven three-level Δ-type superconducting qubits. We find that the concurrent parametric interactions, which decoupled f...

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Bibliographic Details
Published in:International journal of theoretical physics 2015-08, Vol.54 (8), p.2467-2480
Main Authors: Cheng, Guang-Ling, Chen, Ai-Xi, Zhong, Wen-Xue
Format: Article
Language:English
Subjects:
Elementary Particles
Mathematical and Computational Physics
Physics
Physics and Astronomy
Quantum Field Theory
Quantum Physics
Theoretical
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Summary:We present an alternative scheme for generating six-partite continuous variable Greenberger-Horne-Zeilinger entanglement of the separated resonators that are interconnected by two driven three-level Δ-type superconducting qubits. We find that the concurrent parametric interactions, which decoupled from the degrees of freedom of the superconducting qubit, could occur among six distant resonators via adjusting the detunings, Rabi frequencies and coupling constants. It is based on such a nonlinear interaction that six separated resonators are pulled into a stable entangled state, which is independent of the original state of the qubits and is also insensitive to their decoherence. The root of entanglement generation is attributed to the coherently induced parametric interactions that exist simultaneously among six distant resonators. The scheme we present will provide a promising method for the scalable quantum information processing with continuous variables in the solid-state system.
ISSN:0020-7748
1572-9575
DOI:10.1007/s10773-014-2474-1