A Fiber-cavity Quantum Memory with an Integrated Photon Source

Philip J. Bustard, Kent Bonsma-Fisher, Daniel Poitras, Duncan G. England, Benjamin Sussman

Published Jan 1, 2023• 1 citation

Abstract

We propose a fiber quantum memory with an integrated spontaneous four-wave mixing photon pair source. We demonstrate retrieval of signal photons with non-classical statistics.

DOI: 10.1364/cleo_fs.2023.ftu3a.6

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A Fiber-cavity Quantum Memory with an Integrated Photon Source

Philip J. Bustard, Kent Bonsma-Fisher, Daniel Poitras, Duncan G. England, Benjamin Sussman

Published Jan 1, 2023• 1 citation

Publisher

Abstract

We propose a fiber quantum memory with an integrated spontaneous four-wave mixing photon pair source. We demonstrate retrieval of signal photons with non-classical statistics.

DOI: 10.1364/cleo_fs.2023.ftu3a.6

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{g}_{\text{AC}}^{(2)}=0.54(1)

in the first readout bin and a readout frequency translation efficiency of $\ensuremath{\approx}80%$. The

1/e

memory lifetime is $\ensuremath{\approx}67$ cavity cycles, or 1.68 $\textmu{}\mathrm{s}$. In an alternate fiber cavity, we show a strategy for noise reduction and measure

{g}_{\text{AC}}^{(2)}=0.068(10)

after one cavity cycle.

11.3%\ifmmode\pm\else\textpm\fi{}0.1

% total memory efficiency and a signal-to-noise ratio (SNR) of 12.8 after one round trip. In a second, monolithic cavity, we increase this lifetime to $1.75\phantom{\rule{0.16em}{0ex}}\ensuremath{\mu}\mathrm{s}$ (35 round trips) with a memory efficiency of

12.7%\ifmmode\pm\else\textpm\fi{}0.2%

(SNR of $7.0\ifmmode\pm\else\textpm\fi{}0.2$) after one round trip. Fiber-based cavities for quantum storage at telecom wavelengths offer a promising route to synchronizing spontaneous-photon-generation events and building scalable quantum networks.