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Realization of a photonic CNOT gate sufficient for quantum computation

Sara Gasparoni·Jian-Wei Pan·Philip Walther·Terry Rudolph·Anton Zeilinger
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Abstract

We report the first experimental demonstration of a quantum controlled-NOT gate for different photons, which is classically feed-forwardable. In the experiment, we achieved this goal with the use only of linear optics, an entangled ancillary pair of photons and post-selection. The techniques developed in our experiment will be of significant importance for quantum information processing with linear optics.

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Sara Gasparoni, Jian-Wei Pan, Philip Walther, Terry Rudolph, Anton Zeilinger. 2004-04-20. Realization of a photonic CNOT gate sufficient for quantum computation. https://doi.org/10.1103/physrevlett.93.020504

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