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arXiv · 1610.09206

Controlled-phase gate for photons based on stationary light

Ivan Iakoupov·Johannes Borregaard·Anders S. Sørensen
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Abstract

We propose a method to induce strong effective interactions between photons mediated by an atomic ensemble. To achieve this, we use the so-called stationary light effect to enhance the interaction. Regardless of the single-atom coupling to light, the interaction strength between the photons can be enhanced by increasing the total number of atoms. For sufficiently many atoms, the setup can be viable as a controlled-phase gate for photons. We derive analytical expressions for the fidelities for two modes of gate operation: deterministic and heralded conditioned on the presence of two photons at the output.

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Ivan Iakoupov, Johannes Borregaard, Anders S. Sørensen. 2018-01-05. Controlled-phase gate for photons based on stationary light. https://doi.org/10.1103/physrevlett.120.010502

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