Efficient creation of multipartite entanglement in flux qubits

Details Efficient creation of multipartite entanglement in flux qubits Efficient creation of multipartite entanglement in flux qubits

2009-11-30

arxiv.org/abs/0911.5610v2

Physics

Quantum Physics

15 pages, 7 figures; extended sections on coupling strength, system preparation, and entanglement detection

Scientific paper

We investigate three superconducting flux qubits coupled in a loop. In this setup, tripartite entanglement can be created in a natural, controllable, and stable way. Both generic kinds of tripartite entanglement -the W type as well as the GHZ type entanglement- can be identified among the eigenstates. We also discuss the violation of Bell inequalities in this system and show the impact of a limited measurement fidelity on the detection of entanglement and quantum nonlocality.

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