Controlled-phase gate for photons based on stationary light
arXiv:1610.09206 · doi:10.1103/PhysRevLett.120.010502
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.
arXiv comment5 pages, 3 figures + Supplemental Material
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