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  {\bf \Large \textsf{Toward an heralded quantum memory for single photons}}
  collaborators:~Zhang~Zhiqiang, Ravi~Kumar, Kyle~Arnold, Murray~Barrett.
\end{center}

Quantum memories promise to allow the scalability of quantum communication protocols. A memory that could confirm the effective storage of an excitation could enhance this scalability even further. We propose a scheme based on the interaction between a cold atomic ensemble and a cavity, and test it with narrowband heralded single photons.

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\begin{minipage}[c]{0.4\linewidth}
    \centering
    \includegraphics[width=0.98\columnwidth]{hybrid/setup_sketch.pdf}
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\begin{minipage}{0.6\linewidth}
    \centering
    \includegraphics[width=0.9\columnwidth]{hybrid/cavity_efficiency/cavity_output.pdf}
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\figcaption{Left: schematic of the experiment. Four-wave mixing in a cold cloud of $^{87}$Rb generates heralded single photons (probe), sent to a second cold atomic ensemble interacting with an optical cavity.
Left: time correlation between heralding events and detections at the output of the cavity.
}
\end{figurehere}
