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arXiv · 1610.08082

Scalable, chip-based optically-controlled gates for quantum information processing

I. A. Burenkov·O. V. Tikhonova·S. V. Polyakov
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Abstract

Here we present a simple and robust method to build on-the-fly configurable quantum gates based on a photonic exchange between quantum nodes. The idea is based on a high reflectivity of Bragg grating structures near resonant wavelengths. The control is exerted by applying an external strongly off-resonant or even a static electromagnetic field and taking advantage of the Kerr effect. When the nonlinear phase shift is strong enough, the Bragg mirror disappears, thereby allowing a transmission of a wave packet from one node to another. An example of a protocol for quantum logic gates that relies on this framework is offered.

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I. A. Burenkov, O. V. Tikhonova, S. V. Polyakov. 2016-10-25. Scalable, chip-based optically-controlled gates for quantum information processing. https://doi.org/10.1088/1612-2011%2F13%2F12%2F125206

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