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arXiv · 1308.5102

Measurement-based quantum computation with trapped ions

B. P. Lanyon·P. Jurcevic·M. Zwerger·C. Hempel·E. A. Martinez·W. Dür·H. J. Briegel·R. Blatt·C. F. Roos
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Abstract

Measurement-based quantum computation (MBQC) represents a powerful and flexible framework for quantum information processing, based on the notion of entangled quantum states as computational resources. The most prominent application is the one-way quantum computer, with the cluster state as its universal resource. Here we demonstrate the principles of MBQC using deterministically generated graph states of up to 7 qubits, in a system of trapped atomic ions. Firstly we implement a universal set of operations for quantum computing. Secondly we demonstrate a family of measurement-based quantum error correction codes, and show their improved performance as the code length is increased. We show that all our graph states violate a multipartite Bell inequality and are therefore capable of information processing tasks that cannot be described by a local hidden variable model. The methods presented can directly be scaled up to generate graph states of several tens of qubits.

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B. P. Lanyon, P. Jurcevic, M. Zwerger, C. Hempel, E. A. Martinez, W. Dür, H. J. Briegel, R. Blatt, C. F. Roos. 2013-08-23. Measurement-based quantum computation with trapped ions. https://doi.org/10.1103/physrevlett.111.210501

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