Entanglement generation and perfect state transfer in ferromagnetic qubit chains

Details Entanglement generation and perfect state transfer in ferromagnetic qubit chains Entanglement generation and perfect state transfer in ferromagnetic qubit chains

2008-12-12

arxiv.org/abs/0812.2404v2

New Journal of Physics 11, 063038 (2009)

Physics

Quantum Physics

Scientific paper

10.1088/1367-2630/11/6/063038

We propose to use ferromagnetic systems for entanglement generation and distribution together with perfect state transfer between distant parties in a qubit chain. The scheme relies on an effective 2-qubit dynamics, realized by leaving two empty sites in a uniformly filled chain. This allows long-range interacting qubit chains to serve as quantum channels for both tasks with optimal performances. Remarkably, the entanglement between sender and receiver sites is independent of both the transmission distance and of system size. This property opens new perspectives for short and mid-range quantum communication with qubit chains.

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