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arXiv · quant-ph/0312194

Schrodinger cats and their power for quantum information processing

A. Gilchrist·Kae Nemoto·W. J. Munro·T. C. Ralph·S. Glancy·Samuel. L. Braunstein·G. J. Milburn
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Abstract

We outline a toolbox comprised of passive optical elements, single photon detection and superpositions of coherent states (Schrodinger cat states). Such a toolbox is a powerful collection of primitives for quantum information processing tasks. We illustrate its use by outlining a proposal for universal quantum computation. We utilize this toolbox for quantum metrology applications, for instance weak force measurements and precise phase estimation. We show in both these cases that a sensitivity at the Heisenberg limit is achievable.

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A. Gilchrist, Kae Nemoto, W. J. Munro, T. C. Ralph, S. Glancy, Samuel. L. Braunstein, G. J. Milburn. 2003-12-24. Schrodinger cats and their power for quantum information processing. https://doi.org/10.1088/1464-4266/6/8/032

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