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Efficient routing quantum information in one-dimensional tight-binding array
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DOI：10.1093/ptep/ptaa051.png)
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Abstract
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We present an efficient quantum router using a fully-engineered one-dimensional tight-binding array acting as quantum data bus. Quantum routing is achieved by weakly coupling the sender and the receivers to the data bus. We show that perfect transfer of a state between sender and a chosen receiver can be achieved via appropriately tuning the on-site energy applied on the site of the sender. A generalization of this model to the case of multiple receivers is then studied. The results show that the state is equally split between receivers who participate in communication. Moreover, that a similar idea can be used to create W state between all receivers is further emphasized.
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COMMUNICATION
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